1
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Zhang C, Zuo W, Ai L, Tu S, Jiang J. Two-dimensional molybdenum boride coordinating with ruthenium nanoparticles to boost hydrogen generation from hydrolytic dehydrogenation of ammonia borane. J Colloid Interface Sci 2024; 669:794-803. [PMID: 38744157 DOI: 10.1016/j.jcis.2024.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 04/27/2024] [Accepted: 05/04/2024] [Indexed: 05/16/2024]
Abstract
The coordination between carrier and active metal is critical to the catalytic efficiency of ammonia borane (AB) hydrolysis reaction. In the present study, we report a new type of catalytic support based on molybdenum boride (MBene) MoAl1-xB and demonstrate that the effective combination of MoAl1-xB with Ru nanoparticles can realize the significantly enhanced performance for hydrogen generation. Owing to the efficient activation and dissociation of reactants, the optimal Ru/MoAl1-xB catalyst achieves the large turnover frequency of 494 molH2 molRu-1 min-1, high hydrogen generation rate of 119817 mL min-1 gRu-1 and favorable apparent activation energy of 39.2 kJ mol-1 for the catalytic hydrolysis of AB under alkaline-free condition. The isotopic test suggests the cleavage of OH bond in H2O is the rate-determining step for hydrolysis reaction, while the fracture of B-H bond in AB is also well revealed by attenuated total reflectance (ATR)-Fourier transform infrared (FTIR) spectroscopy. Significantly, the flexible on-demand hydrogen generation is achieved by using chemical switches for on-off AB hydrolysis. This study provides a new support platform based on two-dimensional MBene to exploit efficient catalysts to boost AB dehydrogenation.
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Affiliation(s)
- Chenghui Zhang
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Wei Zuo
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Lunhong Ai
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
| | - Sheng Tu
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Jing Jiang
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
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2
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Jurt P, Gamboa-Carballo JJ, Schweinzer C, Himmelbauer D, Thöny D, Gianetti TL, Trincado M, Grützmacher H. Selective dehydrogenation of ammonia borane to borazine and derivatives by rhodium olefin complexes. Dalton Trans 2024. [PMID: 39140315 PMCID: PMC11323292 DOI: 10.1039/d4dt01520g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 07/24/2024] [Indexed: 08/15/2024]
Abstract
This report presents a selective synthetic approach towards borazine from ammonia borane using a dinuclear rhodium olefin homogeneous catalyst. The synthesis and spectroscopic characterization of a dirhodium ammonia borane complex as an intermediate provides insight into a possible mode of activation.
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Affiliation(s)
- Pascal Jurt
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, CH-8049 Zurich, Switzerland.
| | - Juan José Gamboa-Carballo
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, CH-8049 Zurich, Switzerland.
- Higher Institute of Technologies and Applied Sciences (InSTEC), University of Havana, Ave. S. Allende 1110, 10600 Havana, Cuba
| | - Clara Schweinzer
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, CH-8049 Zurich, Switzerland.
| | - Daniel Himmelbauer
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, A-1060 Vienna, Austria
| | - Debora Thöny
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, CH-8049 Zurich, Switzerland.
| | - Thomas L Gianetti
- Department of Chemistry and Biochemistry, University of Arizona, University Blvd., Tucson, AZ 85719, USA.
| | - Monica Trincado
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, CH-8049 Zurich, Switzerland.
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, CH-8049 Zurich, Switzerland.
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3
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Benaissa I, Rialland B, Bennaamane S, Espada MF, Saffon-Merceron N, Fustier-Boutignon M, Clot E, Mézailles N. N 2 Functionalization via Molybdenum-Nitride Complex: Stepwise BH Bond Additions. Angew Chem Int Ed Engl 2024; 63:e202402586. [PMID: 38683630 DOI: 10.1002/anie.202402586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/29/2024] [Accepted: 04/29/2024] [Indexed: 05/01/2024]
Abstract
Reactivity of (triphosphine)MoIV-nitrido complex generated by N2 splitting, toward boranes is reported. The simple adduct Mo≡N→BH3 is observed with BH3.SMe2 while 1,2 addition is evidenced with 9-BBN leading to H-Mo=NBR2. A second addition of BH3.SMe2 is facile and forms an unprecedented complex featuring two bridging H between two B and the Mo centers. Addition of PMe3 or BH3.SMe2 promotes reductive elimination and N-H bond formation. The full sequence of functionalization at Mo≡N obtained after N2 splitting is therefore evidenced in this work.
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Affiliation(s)
- Idir Benaissa
- Laboratoire Hétérochimie, Fondamentale et Appliquée, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
- Present address: Institute of Science, Technology and Innovation-UM6P, Hay Moulay Rachid, BP43150, Benguerir, Morocco
| | - Barbara Rialland
- Laboratoire Hétérochimie, Fondamentale et Appliquée, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
- Present address: Institute of Science, Technology and Innovation-UM6P, Hay Moulay Rachid, BP43150, Benguerir, Morocco
| | - Soukaina Bennaamane
- Laboratoire Hétérochimie, Fondamentale et Appliquée, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
- Present address: Institute of Science, Technology and Innovation-UM6P, Hay Moulay Rachid, BP43150, Benguerir, Morocco
| | - Maria F Espada
- Laboratoire Hétérochimie, Fondamentale et Appliquée, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
- Present address: Institute of Science, Technology and Innovation-UM6P, Hay Moulay Rachid, BP43150, Benguerir, Morocco
| | - Nathalie Saffon-Merceron
- Institut de Chimie de Toulouse ICT-UAR2599, Université Paul Sabatier, CNRS, 31062, Toulouse Cedex, France
| | - Marie Fustier-Boutignon
- Laboratoire Hétérochimie, Fondamentale et Appliquée, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
- Present address: Institute of Science, Technology and Innovation-UM6P, Hay Moulay Rachid, BP43150, Benguerir, Morocco
| | - Eric Clot
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34000, Montpellier, France
| | - Nicolas Mézailles
- Laboratoire Hétérochimie, Fondamentale et Appliquée, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
- Present address: Institute of Science, Technology and Innovation-UM6P, Hay Moulay Rachid, BP43150, Benguerir, Morocco
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4
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Chowdhury T, Murphy F, Kennedy AR, Wilson C, Farnaby JH, Weetman CE. Synthesis and Reactivity of Bis-tris(pyrazolyl)borate Lanthanide/Aluminum Heterobimetallic Trihydride Complexes. Inorg Chem 2024; 63:9390-9394. [PMID: 38682828 PMCID: PMC11134492 DOI: 10.1021/acs.inorgchem.4c00824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 05/01/2024]
Abstract
Molecular heterobimetallic hydride complexes of lanthanide (Ln) and main-group (MG) metals exhibit chemical properties unique from their monometallic counterparts and are highly reactive species, making their synthesis and isolation challenging. Herein, molecular Ln/Al heterobimetallic trihydrides [Ln(Tp)2(μ-H)2Al(H)(N″)] [2-Ln; Ln = Y, Sm, Dy, Yb; Tp = hydrotris(1-pyrazolyl)borate; N″ = N(SiMe3)2] have been synthesized by facile insertion of aminoalane [Me3N·AlH3] into the Ln-N amide bonds of [Ln(Tp)2(N″)] (1-Ln). Thus, this is a simple synthetic strategy to access a range of Ln/Al hydrides. Reactivity studies demonstrate that 2-Ln is a heterobimetallic hydride, with evidence for the cooperative nature of 2-Ln shown by the catalytic amine-borane dehydrocoupling under ambient conditions in contrast to its monomeric counterparts.
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Affiliation(s)
- Tajrian Chowdhury
- Joseph
Black Building, School of Chemistry, University
of Glasgow, Glasgow G12 8QQ, U.K.
| | - Fáinché Murphy
- Department
of Pure and Applied Chemistry, University
of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, U.K.
| | - Alan R. Kennedy
- Department
of Pure and Applied Chemistry, University
of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, U.K.
| | - Claire Wilson
- Joseph
Black Building, School of Chemistry, University
of Glasgow, Glasgow G12 8QQ, U.K.
| | - Joy H. Farnaby
- Joseph
Black Building, School of Chemistry, University
of Glasgow, Glasgow G12 8QQ, U.K.
| | - Catherine E. Weetman
- Department
of Pure and Applied Chemistry, University
of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, U.K.
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5
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Chen X, Luo X, Zhang X, Wang H, Li Y, Ye L, Zheng J, Li H. Regulation of Electronic Structures of the Urchin-Like NiCoP/CoP Nanocatalysts for Fast Hydrogen Evolution. Chemistry 2024; 30:e202304266. [PMID: 38369590 DOI: 10.1002/chem.202304266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/07/2024] [Accepted: 02/16/2024] [Indexed: 02/20/2024]
Abstract
The exploration of stable, efficient, and low-cost catalysts toward ammonia borane hydrolysis is of vital significance for the practical implementation of this hydrogen production technology. Integrating interface engineering and nano-architecture engineering is a favorable strategy to elevate catalytic performance, as it can modify the electronic structure and provide sufficient active sites simultaneously. In this work, urchin-like NiCoP/CoP heterostructures are prepared via a three-step hydrothermal-oxidation-phosphorization synthesis route. It is demonstrated that the original Ni/Co molar ratio and the amount of phosphorus are crucial for adjusting the morphology, enhancing the exposed surface area, facilitating charge transfer, and modulating the adsorption and activation of H2O molecules. Consequently, the optimal Ni1Co2P heterostructure displays remarkable catalytic properties in the hydrolysis of ammonia borane with a turnover frequency (TOF) value of 30.3 molH2 ⋅ min-1 ⋅ molmetal -1, a low apparent activation energy of 25.89 kJ ⋅ mol-1, and good stability. Furthermore, by combining infrared spectroscopy and isotope kinetics experiments, a possible mechanism for the hydrolysis of ammonia borane was proposed.
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Affiliation(s)
- Xiaodong Chen
- School of chemistry and Materials Engineering, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
- Guangdong Provincial Key Laboratory for Electronic Functional Materials and Devices, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
| | - Xiaoling Luo
- School of chemistry and Materials Engineering, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
| | - Xuefeng Zhang
- School of chemistry and Materials Engineering, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
- Guangdong Provincial Key Laboratory for Electronic Functional Materials and Devices, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
| | - Huize Wang
- School of chemistry and Materials Engineering, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
- Guangdong Provincial Key Laboratory for Electronic Functional Materials and Devices, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
| | - Yongcheng Li
- School of chemistry and Materials Engineering, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
| | - Lifang Ye
- School of chemistry and Materials Engineering, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
| | - Jiahua Zheng
- School of chemistry and Materials Engineering, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
| | - Hao Li
- School of chemistry and Materials Engineering, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
- Guangdong Provincial Key Laboratory for Electronic Functional Materials and Devices, Huizhou University, No.46, Yanda Avenue, Huizhou, 516007, China
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6
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Greño M, Pérez-Redondo A, Torrijos J, Varela-Izquierdo V, Yélamos C. Half-Sandwich Zirconium and Hafnium Amidoborane Complexes: Precursors of Hydride Derivatives. Inorg Chem 2024; 63:6576-6588. [PMID: 38567753 PMCID: PMC11022180 DOI: 10.1021/acs.inorgchem.3c02826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 03/08/2024] [Accepted: 03/13/2024] [Indexed: 04/16/2024]
Abstract
Half-sandwich zirconium(IV) and hafnium(IV) complexes with amidoborane and hydride ligands have been isolated in the stoichiometric reactions of mono(pentamethylcyclopentadienyl)metal alkyl and amido derivatives with the amine-boranes NHR2BH3 (R2 = H2, Me2, HtBu). Treatment of the tris(trimethylsilylmethyl) complexes [M(η5-C5Me5)(CH2SiMe3)3] with NH3BH3 (3 equiv) gives the seven-coordinate species [M(η5-C5Me5)(NH2BH3)3] (M = Zr (1), Hf (2)) with three κ2N,H-NH2BH3 ligands. The tris(neophyl) [M(η5-C5Me5)(CH2CMe2Ph)3] or tris(dimethylamido) [M(η5-C5Me5)(NMe2)3] derivatives react with NHMe2BH3 (≥3 equiv) to afford bis(dimethylamidoborane) hydride complexes [M(η5-C5Me5)H(NMe2BH3)2] (M = Zr (3), Hf (4)) via thermally unstable [M(η5-C5Me5)(NMe2BH3)3] species. The reaction of [M(η5-C5Me5)(NMe2)3] and NH2tBuBH3 (≥4 equiv) affords analogous mixed amidoborane hydride derivatives [M(η5-C5Me5)H(NHtBuBH3)(NMe2BH3)] (M = Zr (5), Hf (6)) with κ2N,H-NHtBuBH3 and κ3N,H,H-NMe2BH3 ligands. The addition of NHR2BH3 (≥1 equiv) on the mono(dimethylamido) complexes [M(η5-C5Me5)Cl2(NMe2)] in hexane leads to the precipitation of the ionic compounds [(NHR2)2BH2][{M(η5-C5Me5)Cl2}2(μ-H)3] (R2 = Me2, M = Zr (7), Hf (8); R2 = HtBu, M = Zr (9), Hf (10)). Molecular hydride species [Cl2(η5-C5Me5)M(μ-Cl)(μ-H)2M(η5-C5Me5)Cl(NH2tBu)] (M = Zr (11), Hf (12)) could be isolated from mixtures of complexes [M(η5-C5Me5)Cl2(NMe2)] and lower ratios of NH2tBuBH3. The zirconium complex 11 decomposes in solution to give the mononuclear tert-butylamido derivative [Zr(η5-C5Me5)Cl2(NHtBu)] (13) along with other byproducts.
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Affiliation(s)
- Maider Greño
- Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain
| | - Adrián Pérez-Redondo
- Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain
| | - José Torrijos
- Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain
| | - Víctor Varela-Izquierdo
- Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain
| | - Carlos Yélamos
- Departamento de Química
Orgánica y Química Inorgánica, Instituto de Investigación
Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain
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7
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Zhao W, Li H, Ge Q, Cong H, Yang S. Synthesis of Dihydroquinoxalinones from Biomass-Derived Keto Acids and o-Phenylenediamines. J Org Chem 2024; 89:3987-3994. [PMID: 38437716 DOI: 10.1021/acs.joc.3c02821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
A novel catalyst-free cascade amination/cyclization/reduction reaction was developed for the synthesis of various Dihydroquinoxalinones under mild conditions from accessible biomass-derived keto acids and 1,2-phenylenediamines with ammonia borane as a hydrogen donor. This single-step approach enables a simple and eco-friendly route toward the direct synthesis of 12 kinds of Dihydroquinoxalinones in moderate to excellent yields in the green solvent dimethyl carbonate. The results of deuterium-labeling experiments and density function calculations demonstrate that the reductive process proceeds along a double hydrogen transfer pathway. An acceptable yield of Dihydroquinoxalinone can be afforded in a gram-scale experiment, illustrating the practicality of the as-reported reaction system.
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Affiliation(s)
- Wenfeng Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering (Ministry of Education), State-Local Joint Engineering Lab for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China
| | - Hu Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering (Ministry of Education), State-Local Joint Engineering Lab for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China
| | - Qingmei Ge
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Hang Cong
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Song Yang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering (Ministry of Education), State-Local Joint Engineering Lab for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China
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8
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Guo X, Di X, Tang T, Shi Y, Liu D, Wang W, Liu Z, Ji X, Shao X. Amine-functionalized Schiff base covalent organic frameworks supported PdAuIr nanoparticles as high-performance catalysts for formic acid dehydrogenation and hexavalent chromium reduction. J Colloid Interface Sci 2024; 658:362-372. [PMID: 38113545 DOI: 10.1016/j.jcis.2023.12.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/03/2023] [Accepted: 12/13/2023] [Indexed: 12/21/2023]
Abstract
Formic acid (FA) holds significant potential as a liquid hydrogen storage medium. However, it is important to improve the reaction rates and extend the practical applications of FA dehydrogenation and Cr(VI) reduction through the development of efficient heterogeneous catalysts. This study reports the synthesis of a uniformly dispersed PdAuIr nanoparticles (NPs) catalyst loaded with amine groups covalent organic frameworks (COFs). The alloyed NPs demonstrated exceptional effectiveness in FA dehydrogenation rate and Cr(VI) reduction. The initial turnover of frequency (TOF) value for FA dehydrogenation without additives was 9970 h-1 at 298 K, the apparent activation energy (Ea) was 30.3 kJ/mol and the rate constant (k) for Cr(VI) reduction was 0.742 min-1. Additionally, it showcased the ability to undergo recycling up to six times with minimal degradation in performance. The results indicate that its remarkable catalytic performance can be attributed primarily to the favorable mass transfer attributes of the aminated COFs supports, the strong metal-support interaction (SMSI), and the synergistic effects among the metals. This study offers a novel perspective on the advancement of efficient and durable heterogeneous catalysts with diverse capabilities, thereby making significant contributions to the fields of energy and environmental preservation.
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Affiliation(s)
- Xiaosha Guo
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China
| | - Xixi Di
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China
| | - Tian Tang
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China
| | - Yixuan Shi
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China
| | - Dong Liu
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China
| | - Wei Wang
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China
| | - Zhifeng Liu
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China; State Key Laboratory of Qinba Bio-Resource and Ecological Environment, Shaanxi University of Technology, Hanzhong 723001, PR China
| | - Xiaohui Ji
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China
| | - Xianzhao Shao
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong 723001, PR China.
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9
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Gulyaeva ES, Osipova ES, Kovalenko SA, Filippov OA, Belkova NV, Vendier L, Canac Y, Shubina ES, Valyaev DA. Two active species from a single metal halide precursor: a case study of highly productive Mn-catalyzed dehydrogenation of amine-boranes via intermolecular bimetallic cooperation. Chem Sci 2024; 15:1409-1417. [PMID: 38274083 PMCID: PMC10806649 DOI: 10.1039/d3sc05356c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/06/2023] [Indexed: 01/27/2024] Open
Abstract
Metal-metal cooperation for inert bond activation is a ubiquitous concept in coordination chemistry and catalysis. While the great majority of such transformations proceed via intramolecular mode in binuclear complexes, to date only a few examples of intermolecular small molecule activation using usually bimetallic frustrated Lewis pairs (Mδ+⋯M'δ-) have been reported. We introduce herein an alternative approach for the intermolecular bimetallic cooperativity observed in the catalytic dehydrogenation of amine-boranes, in which the concomitant activation of N-H and B-H bonds of the substrate via the synergetic action of Lewis acidic (M+) and basic hydride (M-H) metal species derived from the same mononuclear complex (M-Br). It was also demonstrated that this system generated in situ from the air-stable Mn(i) complex fac-[(CO)3(bis(NHC))MnBr] and NaBPh4 shows high activity for H2 production from several substrates (Me2NHBH3, tBuNH2BH3, MeNH2BH3, NH3BH3) at low catalyst loading (0.1% to 50 ppm), providing outstanding efficiency for Me2NHBH3 (TON up to 18 200) that is largely superior to all known 3d-, s-, p-, f-block metal derivatives and frustrated Lewis pairs (FLPs). These results represent a step forward towards more extensive use of intermolecular bimetallic cooperation concepts in modern homogeneous catalysis.
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Affiliation(s)
- Ekaterina S Gulyaeva
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 Route de Narbonne 31077 Toulouse Cedex 4 France
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Elena S Osipova
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Sergey A Kovalenko
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Oleg A Filippov
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Natalia V Belkova
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Laure Vendier
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 Route de Narbonne 31077 Toulouse Cedex 4 France
| | - Yves Canac
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 Route de Narbonne 31077 Toulouse Cedex 4 France
| | - Elena S Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Dmitry A Valyaev
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 Route de Narbonne 31077 Toulouse Cedex 4 France
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10
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Zhang Q, Fang C, Wang Y, Liu X. Selective and efficient H 2 evolution upon NH 3BH 3 hydrolysis at subzero temperatures. iScience 2024; 27:108774. [PMID: 38261948 PMCID: PMC10797192 DOI: 10.1016/j.isci.2023.108774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/05/2023] [Accepted: 12/20/2023] [Indexed: 01/25/2024] Open
Abstract
In the winter months, the temperature in most of the Earth stays below 0°C; the average temperature in winter at the South Pole is about -60°C. Therefore, it is urgent to develop efficient catalytic systems for selective and efficient H2 evolution upon NH3BH3 hydrolysis at subzero temperatures. For solving the freezing issue of water at below 0°C, herein, we have employed a facile and surfactant-free approach to synthesize M-Pt/C nanocomposites (M = Pd, Rh, Ru, Ni, Cu, or Fe), by the alloying of commercial Pt/C with Pd, Rh, Ru, Cu, Ni, or Fe for selective and efficient H2 evolution upon NH3BH3 hydrolysis in saline solution at below 0°C, even at -15°C. In addition, NH3BH3 hydrolysis over Pd-Pt/C in the saturated NaCl solution is utilized not only for safe hydrogen production but also for its in situ hydrogenation reduction in organic chemistry, which could avoid using dangerous hydrogen cylinders.
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Affiliation(s)
- Qing Zhang
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, P.R. China
| | - Chen Fang
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, P.R. China
| | - Yanlan Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Nevel Cell Technology, Department of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Xiang Liu
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, P.R. China
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11
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Himmelbauer D, Müller F, Schweinzer C, Casas F, Pribanic B, Le Corre G, Thöny D, Trincado M, Grützmacher H. Selective dehydrogenation of ammonia borane to polycondensated BN rings catalysed by ruthenium olefin complexes. Chem Commun (Camb) 2024; 60:885-888. [PMID: 38165285 PMCID: PMC10795514 DOI: 10.1039/d3cc05709g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024]
Abstract
Dehydrogenation of ammonia borane to well-defined products is an important but challenging reaction. A dinuclear ruthenium complex with a Ru-Ru bond bearing a diazadiene (dad) unit and olefins as non-innocent ligands catalyzes the highly selective formation of conjugated polycondensed borazine oligomers (BxNxHy), predominantly B21N21H18, the BN analogue of superbenzene.
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Affiliation(s)
- Daniel Himmelbauer
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163Vienna A-1060Austria
| | - Fabian Müller
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Clara Schweinzer
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Fernando Casas
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Bruno Pribanic
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Grégoire Le Corre
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Debora Thöny
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Monica Trincado
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
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Le Moigne L, Posenato T, Gajan D, Lesage de la Haye J, Raynaud J, Lacôte E. Catalyst-Free Transfer Hydrogenation from Amine-Borane Small Oligomers. Chemistry 2024; 30:e202300145. [PMID: 37814903 DOI: 10.1002/chem.202300145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/11/2023]
Abstract
Amine-borane dimers and oligomers with varied steric and electronic profiles were prepared via capping agent-controlled AA/BB polycondensations. They were used for transfer hydrogenations to aldehydes, ketones, imines as well as electron-poor alkene/alkyne moieties. The amine-borane Lewis-paired oligomers and the congested bis(amine-borane)s provided the highest yields. This was likely helped by facilitated dissociation (oligomers) or H-bond assistance. In the case of the oligomers, the second equivalent of H2 present was also engaged in the reaction. Solid-state NMR characterization provides evidence that the boron-containing materials obtained after transfer dehydrogenation are highly similar to those obtained from thermal dehydrogenation. The oligomers bridge the gap between simple amine-borane molecular reductants and the poly-amine-boranes and provide a full picture of the reactivity changes at the different scales.
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Affiliation(s)
- Louis Le Moigne
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, CNES, ArianeGroup, LHCEP, UMR 5278, Bât. Raulin, 2 rue Victor Grignard, 69622, Villeurbanne, France
| | - Tommaso Posenato
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, CPE Lyon, CP2 M -, UMR 5128, PolyCatMat, 43 Bd du 11 novembre 1918, 69616, Villeurbanne, France
| | - David Gajan
- Univ Lyon, CNRS, ENS de Lyon, Université Claude Bernard Lyon 1, Centre de RMN à Très Hauts Champs de Lyon, UMR5082, 5 Rue de la Doua, 69100, Villeurbanne, France
| | - Jennifer Lesage de la Haye
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, CNES, ArianeGroup, LHCEP, UMR 5278, Bât. Raulin, 2 rue Victor Grignard, 69622, Villeurbanne, France
| | - Jean Raynaud
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, CPE Lyon, CP2 M -, UMR 5128, PolyCatMat, 43 Bd du 11 novembre 1918, 69616, Villeurbanne, France
| | - Emmanuel Lacôte
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, CNES, ArianeGroup, LHCEP, UMR 5278, Bât. Raulin, 2 rue Victor Grignard, 69622, Villeurbanne, France
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13
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Singh T, Atreya V, Jalwal S, Anand A, Chakraborty S. Advances in Group VI Metal-Catalyzed Homogeneous Hydrogenation and Dehydrogenation Reactions. Chem Asian J 2023; 18:e202300758. [PMID: 37815164 DOI: 10.1002/asia.202300758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/10/2023] [Accepted: 10/10/2023] [Indexed: 10/11/2023]
Abstract
Transition metal-catalyzed homogeneous hydrogenation and dehydrogenation reactions for attaining plethora of organic scaffolds have evolved as a key domain of research in academia and industry. These protocols are atom-economic, greener, in line with the goal of sustainability, eventually pave the way for numerous novel environmentally benign methodologies. Appealing progress has been achieved in the realm of homogeneous catalysis utilizing noble metals. Owing to their high cost, less abundance along with toxicity issues led the scientific community to search for sustainable alternatives. In this context, earth- abundant base metals have gained substantial attention culminating enormous progress in recent years, predominantly with pincer-type complexes of nickel, cobalt, iron, and manganese. In this regard, group VI chromium, molybdenum and tungsten complexes have been overlooked and remain underdeveloped despite their earth-abundance and bio-compatibility. This review delineates a comprehensive overview in the arena of homogeneously catalysed (de)hydrogenation reactions using group VI base metals chromium, molybdenum, and tungsten till date. Various reactions have been described; hydrogenation, transfer hydrogenation, dehydrogenation, acceptorless dehydrogenative coupling, hydrogen auto transfer, along with their scope and brief mechanistic insights.
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Affiliation(s)
- Tushar Singh
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
| | - Vaishnavi Atreya
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
| | - Sachin Jalwal
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
| | - Aman Anand
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
| | - Subrata Chakraborty
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
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14
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Wang M, Zhang Q, Wang Y, Liu X. Boosting the Catalytic Performance of NiMoO 4 Nanorods in H 2 Generation upon NH 3BH 3 Hydrolysis via a Reduction Process. Inorg Chem 2023; 62:17555-17564. [PMID: 37822237 DOI: 10.1021/acs.inorgchem.3c03068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Although a range of noble metal catalysts, including Ru, Rh, Pd, Pt, and Au, have been developed for efficient H2 generation upon NH3BH3 hydrolysis at room temperature, this is a highly urgent need for exploring earth-abundant metal nanocatalysts for H2 generation upon NH3BH3 hydrolysis. Herein, a NaBH4 reduction strategy was developed to boost the catalytic performance of NiMoO4 nanorods in H2 generation upon NH3BH3 hydrolysis. Indeed, the pristine NiMoO4 nanorods were catalytically inert in NH3BH3 hydrolysis. Significantly, the reduced NiMoO4 nanorods presented excellent catalytic activity in H2 generation upon NH3BH3 hydrolysis, with a turnover frequency (TOF) of 31.2 L(H2)·gcat-1·h-1. Interestingly, the TOF of NH3BH3 hydrolysis over reduced NiMoO4 nanorods significantly increased from 31.2 to 53.6 L(H2)·gcat-1·h-1 under 0.3 M NaOH. The boosting catalytic performance of NiMoO4 nanorods via NaBH4 reduction in H2 generation might be attributed to the higher content of Oads and the formation of nickel boride in the reduced NiMoO4 nanorods. In this work, NH3BH3 hydrolysis over reduced NiMoO4 nanorods was not only used for safe H2 generation but also for its in situ tandem hydrogenation in organic chemistry.
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Affiliation(s)
- Miaomiao Wang
- Department of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Qing Zhang
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
| | - Yanlan Wang
- Department of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Xiang Liu
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
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15
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Jiang J, Wei W, Ren Z, Luo Y, Wang X, Xu Y, Chang M, Ai L. Facile construction of robust Ru-Co 3O 4 Mott-Schottky catalyst enabling efficient dehydrogenation of ammonia borane for hydrogen generation. J Colloid Interface Sci 2023; 646:25-33. [PMID: 37182256 DOI: 10.1016/j.jcis.2023.04.181] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 04/23/2023] [Accepted: 04/30/2023] [Indexed: 05/16/2023]
Abstract
Developing efficient catalysts for the dehydrogenation of ammonia borane (AB) is important for the safe storage and controlled release of hydrogen, but it is a challenging task. In this study, we designed a robust Ru-Co3O4 catalyst using the Mott-Schottky effect to induce favorable charge rearrangement. The self-created electron-rich Co3O4 and electron-deficient Ru sites at heterointerfaces are indispensable for the activation of the B-H bond in NH3BH3 and the OH bond in H2O, respectively. The synergistic electronic interaction between the electron-rich Co3O4 and electron-deficient Ru sites at the heterointerfaces resulted in an optimal Ru-Co3O4 heterostructure that exhibited outstanding catalytic activity for the hydrolysis of AB in the presence of NaOH. The heterostructure had an extremely high hydrogen generation rate (HGR) of 12238 mL min-1 gcat-1 and an expected high turnover frequency (TOF) of 755 molH2 molRu-1 min-1 at 298 K. The activation energy needed for the hydrolysis was low (36.65 kJ mol-1). This study opens up a new avenue for the rational design of high-performance catalysts for AB dehydrogenation based on the Mott-Schottky effect.
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Affiliation(s)
- Jing Jiang
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
| | - Wei Wei
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Zhen Ren
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Yang Luo
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Xinzhi Wang
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Ying Xu
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Mingming Chang
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Lunhong Ai
- College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
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16
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Guan S, Liu Y, Zhang H, Shen R, Wen H, Kang N, Zhou J, Liu B, Fan Y, Jiang J, Li B. Recent Advances and Perspectives on Supported Catalysts for Heterogeneous Hydrogen Production from Ammonia Borane. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2300726. [PMID: 37118857 PMCID: PMC10375177 DOI: 10.1002/advs.202300726] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/19/2023] [Indexed: 06/19/2023]
Abstract
Ammonia borane (AB), a liquid hydrogen storage material, has attracted increasing attention for hydrogen utilization because of its high hydrogen content. However, the slow kinetics of AB hydrolysis and the indefinite catalytic mechanism remain significant problems for its large-scale practical application. Thus, the development of efficient AB hydrolysis catalysts and the determination of their catalytic mechanisms are significant and urgent. A summary of the preparation process and structural characteristics of various supported catalysts is presented in this paper, including graphite, metal-organic frameworks (MOFs), metal oxides, carbon nitride (CN), molybdenum carbide (MoC), carbon nanotubes (CNTs), boron nitride (h-BN), zeolites, carbon dots (CDs), and metal carbide and nitride (MXene). In addition, the relationship between the electronic structure and catalytic performance is discussed to ascertain the actual active sites in the catalytic process. The mechanism of AB hydrolysis catalysis is systematically discussed, and possible catalytic paths are summarized to provide theoretical considerations for the designing of efficient AB hydrolysis catalysts. Furthermore, three methods for stimulating AB from dehydrogenation by-products and the design of possible hydrogen product-regeneration systems are summarized. Finally, the remaining challenges and future research directions for the effective development of AB catalysts are discussed.
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Affiliation(s)
- Shuyan Guan
- College of Science, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, P. R. China
- Research Center of Green Catalysis, College of Chemistry, School of Physics and Microelectronics, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo, 454000, P. R. China
| | - Yanyan Liu
- College of Science, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, P. R. China
- Research Center of Green Catalysis, College of Chemistry, School of Physics and Microelectronics, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab on Forest Chemical Engineering, SFA, 16 Suojinwucun, Nanjing, 210042, P. R. China
| | - Huanhuan Zhang
- Research Center of Green Catalysis, College of Chemistry, School of Physics and Microelectronics, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo, 454000, P. R. China
| | - Ruofan Shen
- Research Center of Green Catalysis, College of Chemistry, School of Physics and Microelectronics, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Hao Wen
- Research Center of Green Catalysis, College of Chemistry, School of Physics and Microelectronics, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Naixin Kang
- ISM, UMR CNRS N° 5255, Univ. Bordeaux, Talence Cedex, 33405, France
| | - Jingjing Zhou
- College of Science, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, P. R. China
| | - Baozhong Liu
- College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo, 454000, P. R. China
| | - Yanping Fan
- College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo, 454000, P. R. China
| | - Jianchun Jiang
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab on Forest Chemical Engineering, SFA, 16 Suojinwucun, Nanjing, 210042, P. R. China
| | - Baojun Li
- College of Science, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, P. R. China
- Research Center of Green Catalysis, College of Chemistry, School of Physics and Microelectronics, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo, 454000, P. R. China
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17
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Li H, He W, Xu L, Pan Y, Xu R, Sun Z, Wei S. Synergistic interface between metal Cu nanoparticles and CoO for highly efficient hydrogen production from ammonia borane. RSC Adv 2023; 13:11569-11576. [PMID: 37063727 PMCID: PMC10099176 DOI: 10.1039/d3ra01265d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/04/2023] [Indexed: 04/18/2023] Open
Abstract
The development of efficient non-noble metal catalysts for the dehydrogenation of hydrogen (H2) storage materials is highly desirable to enable the global production and storage of H2 energy. In this study, Cu x -(CoO)1-x /TiO2 catalysts with a Cu-CoO interface supported on TiO2 are shown to exhibit high catalytic efficiency for ammonia borane (NH3BH3) hydrolysis to generate H2. The best catalytic activity was observed for a catalyst with a Cu : Co molar ratio of 1 : 1. The highest dehydrogenation turnover frequency (TOF) of 104.0 molH2 molmetal -1 min-1 was observed in 0.2 M NaOH at room temperature, surpassing most of the TOFs reported for non-noble catalysts for NH3BH3 hydrolysis. Detailed characterisation of the catalysts revealed electronic interactions at the Cu-CoO heterostructured interface of the catalysts. This interface provides bifunctional synergetic sites for H2 generation, where activation and adsorption of NH3BH3 and H2O are accelerated on the surface of Cu and CoO, respectively. This study details an effective method of rationally designing non-noble metal catalysts for H2 generation via a metal and transition-metal oxide interface.
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Affiliation(s)
- Hongmei Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China Hefei 230029 P. R. China
| | - Wenxue He
- National Synchrotron Radiation Laboratory, University of Science and Technology of China Hefei 230029 P. R. China
| | - Liuxin Xu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China Hefei 230029 P. R. China
| | - Ya Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China Hefei 230029 P. R. China
| | - Ruichao Xu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China Hefei 230029 P. R. China
| | - Zhihu Sun
- National Synchrotron Radiation Laboratory, University of Science and Technology of China Hefei 230029 P. R. China
| | - Shiqiang Wei
- National Synchrotron Radiation Laboratory, University of Science and Technology of China Hefei 230029 P. R. China
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McWilliams SF, Mercado BQ, MacLeod KC, Fataftah MS, Tarrago M, Wang X, Bill E, Ye S, Holland PL. Dynamic effects on ligand field from rapid hydride motion in an iron(ii) dimer with an S = 3 ground state. Chem Sci 2023; 14:2303-2312. [PMID: 36873832 PMCID: PMC9977447 DOI: 10.1039/d2sc06412j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/17/2023] [Indexed: 02/11/2023] Open
Abstract
Hydride complexes are important in catalysis and in iron-sulfur enzymes like nitrogenase, but the impact of hydride mobility on local iron spin states has been underexplored. We describe studies of a dimeric diiron(ii) hydride complex using X-ray and neutron crystallography, Mössbauer spectroscopy, magnetism, DFT, and ab initio calculations, which give insight into the dynamics and the electronic structure brought about by the hydrides. The two iron sites in the dimer have differing square-planar (intermediate-spin) and tetrahedral (high-spin) iron geometries, which are distinguished only by the hydride positions. These are strongly coupled to give an S total = 3 ground state with substantial magnetic anisotropy, and the merits of both localized and delocalized spin models are discussed. The dynamic nature of the sites is dependent on crystal packing, as shown by changes during a phase transformation that occurs near 160 K. The change in dynamics of the hydride motion leads to insight into its influence on the electronic structure. The accumulated data indicate that the two sites can trade geometries by rotating the hydrides, at a rate that is rapid above the phase transition temperature but slow below it. This small movement of the hydrides causes large changes in the ligand field because they are strong-field ligands. This suggests that hydrides could be useful in catalysis not only due to their reactivity, but also due to their ability to rapidly modulate the local electronic structure and spin states at metal sites.
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Affiliation(s)
| | | | - K Cory MacLeod
- Department of Chemistry, Yale University New Haven Connecticut USA
| | - Majed S Fataftah
- Department of Chemistry, Yale University New Haven Connecticut USA
| | - Maxime Tarrago
- Max Planck Institute for Chemical Energy Conversion Mülheim an der Ruhr Germany
| | - Xiaoping Wang
- Neutron Sciences Directorate, Oak Ridge National Laboratory Oak Ridge Tennessee USA
| | - Eckhard Bill
- Max Planck Institute for Chemical Energy Conversion Mülheim an der Ruhr Germany
| | - Shengfa Ye
- Max Planck Institute for Chemical Energy Conversion Mülheim an der Ruhr Germany
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian China
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Turani-I-Belloto K, Chiriac R, Toche F, Petit E, Yot PG, Alauzun JG, Demirci UB. Synthesis: Molecular Structure, Thermal-Calorimetric and Computational Analyses, of Three New Amine Borane Adducts. Molecules 2023; 28:molecules28031469. [PMID: 36771135 PMCID: PMC9921861 DOI: 10.3390/molecules28031469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Cyclopropylamine borane C3H5NH2BH3 (C3AB), 2-ethyl-1-hexylamine borane CH3(CH2)3CH(C2H5)CH2NH2BH3 (C2C6AB) and didodecylamine borane (C12H25)2NHBH3 ((C12)2AB) are three new amine borane adducts (ABAs). They are synthesized by reaction of the corresponding amines with a borane complex, the reaction being exothermic as shown by Calvet calorimetry. The successful synthesis of each has been demonstrated by FTIR, Raman and NMR. For instance, the 11B NMR spectra show the presence of signals typical of the NBH3 environment, thereby implying the formation of B-N bonds. The occurrence of dihydrogen bonds (DHBs) for each of the ABAs has been highlighted by DSC and FTIR, and supported by DFT calculations (via the Mulliken charges for example). When heated, the three ABAs behave differently: C3AB and C2C6AB decompose from 68 to 100 °C whereas (C12)2AB is relatively stable up to 173 °C. That means that these ABAs are not appropriate as hydrogen carriers, but the 'most' stable (C12)2AB could open perspectives for the synthesis of advanced materials.
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Affiliation(s)
- Kevin Turani-I-Belloto
- Institut Europeen des Membranes, IEM–UMR 5635, ENSCM, CNRS, Universite de Montpellier, 34090 Montpellier, France
| | - Rodica Chiriac
- Laboratoire des Multimateriaux et Interfaces, UMR CNRS 5615, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - François Toche
- Laboratoire des Multimateriaux et Interfaces, UMR CNRS 5615, Université Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Eddy Petit
- Institut Europeen des Membranes, IEM–UMR 5635, ENSCM, CNRS, Universite de Montpellier, 34090 Montpellier, France
| | - Pascal G. Yot
- ICGM, Universite de Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | - Johan G. Alauzun
- ICGM, Universite de Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | - Umit B. Demirci
- Institut Europeen des Membranes, IEM–UMR 5635, ENSCM, CNRS, Universite de Montpellier, 34090 Montpellier, France
- Correspondence:
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20
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Pal S. Cp* non-innocence and the implications of (η 4-Cp*H)Rh intermediates in the hydrogenation of CO 2, NAD +, amino-borane, and the Cp* framework - a computational study. Dalton Trans 2023; 52:1182-1187. [PMID: 36648493 DOI: 10.1039/d2dt03611h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In hydrogenation mediated by half-sandwich complexes of Rh, Cp*Rh(III)-H intermediates are critical hydride-delivery agents. For bipyridine-supported complexes, a unique transformation named 'Cp* non-innocence' leads to the appearance of (Cp*H)Rh(I) intermediates, which are purported to exhibit enhanced hydride-delivery capabilities. In this work, DFT calculations performed to compare the role of these complexes in hydrogenation reveal that (Cp*H)Rh(I) intermediates do not compete with the conventional pathway (involving Cp*Rh(III)-H); instead they can lead to sequential hydrogenation of the Cp* framework, and potentially, catalyst degradation. Thus, caution is warranted when invoking the truly homogeneous nature of hydrogenation catalysis mediated by this popular class of complexes.
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Affiliation(s)
- Shrinwantu Pal
- Coordination Chemistry and Catalysis Unit, Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan.
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21
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Tseng YT, Pelmenschikov V, Iffland-Mühlhaus L, Calabrese D, Chang YC, Laun K, Pao CW, Sergueev I, Yoda Y, Liaw WF, Chen CH, Hsu IJ, Apfel UP, Caserta G, Lauterbach L, Lu TT. Substrate-Gated Transformation of a Pre-Catalyst into an Iron-Hydride Intermediate [(NO) 2(CO)Fe(μ-H)Fe(CO)(NO) 2] - for Catalytic Dehydrogenation of Dimethylamine Borane. Inorg Chem 2023; 62:769-781. [PMID: 36580657 DOI: 10.1021/acs.inorgchem.2c03278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Continued efforts are made on the development of earth-abundant metal catalysts for dehydrogenation/hydrolysis of amine boranes. In this study, complex [K-18-crown-6-ether][(NO)2Fe(μ-MePyr)(μ-CO)Fe(NO)2] (3-K-crown, MePyr = 3-methylpyrazolate) was explored as a pre-catalyst for the dehydrogenation of dimethylamine borane (DMAB). Upon evolution of H2(g) from DMAB triggered by 3-K-crown, parallel conversion of 3-K-crown into [(NO)2Fe(N,N'-MePyrBH2NMe2)]- (5) and an iron-hydride intermediate [(NO)2(CO)Fe(μ-H)Fe(CO)(NO)2]- (A) was evidenced by X-ray diffraction/nuclear magnetic resonance/infrared/nuclear resonance vibrational spectroscopy experiments and supported by density functional theory calculations. Subsequent transformation of A into complex [(NO)2Fe(μ-CO)2Fe(NO)2]- (6) is synchronized with the deactivated generation of H2(g). Through reaction of complex [Na-18-crown-6-ether][(NO)2Fe(η2-BH4)] (4-Na-crown) with CO(g) as an alternative synthetic route, isolated intermediate [Na-18-crown-6-ether][(NO)2(CO)Fe(μ-H)Fe(CO)(NO)2] (A-Na-crown) featuring catalytic reactivity toward dehydrogenation of DMAB supports a substrate-gated transformation of a pre-catalyst [(NO)2Fe(μ-MePyr)(μ-CO)Fe(NO)2]- (3) into the iron-hydride species A as an intermediate during the generation of H2(g).
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Affiliation(s)
- Yu-Ting Tseng
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan.,Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | | | - Linda Iffland-Mühlhaus
- Department of Chemistry and Biochemistry, Inorganic Chemistry Ι, Ruhr-Universität Bochum, Bochum 44801, Germany
| | - Donato Calabrese
- Institute of Applied Microbiology, RWTH Aachen University, Aachen 52074, Germany
| | - Yu-Che Chang
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Konstantin Laun
- Institut für Chemie, Technische Universität Berlin, Berlin 10623, Germany
| | - Chih-Wen Pao
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Ilya Sergueev
- Deutsches Elektronen-Synchrotron DESY, Hamburg D-22607, Germany
| | | | - Wen-Feng Liaw
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chien-Hong Chen
- Department of Medical Applied Chemistry, Chung Shan Medical University and Department of Medical Education, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
| | - I-Jui Hsu
- Department of Molecular Science and Engineering, Research and Development Center of Smart Textile Technology, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Ulf-Peter Apfel
- Department of Chemistry and Biochemistry, Inorganic Chemistry Ι, Ruhr-Universität Bochum, Bochum 44801, Germany.,Department for Electrosynthesis, Fraunhofer UMSICHT, Oberhausen 46047, Germany
| | - Giorgio Caserta
- Institut für Chemie, Technische Universität Berlin, Berlin 10623, Germany
| | - Lars Lauterbach
- Institute of Applied Microbiology, RWTH Aachen University, Aachen 52074, Germany
| | - Tsai-Te Lu
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan.,Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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22
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Peng C, Liu W, Wang Y. Mechanistic insights into H 3B·NMeH 2 dehydrogenation by Co-based complexes: a DFT perspective. NEW J CHEM 2023. [DOI: 10.1039/d2nj06155d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Mechanistic insights into Co-catalyzed H3B·NMeH2 dehydrogenation and polyaminoborane formation are carefully investigated using density functional theory.
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Affiliation(s)
- Cheng Peng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Wei Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Yong Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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23
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Li YN, Zhou MX, Wu JB, Wang Z, Zeng YF. Tandem reduction and trifluoroethylation of quinolines and quinoxalines with trifluoroacetic acid and trimethylamine borane. Org Biomol Chem 2022; 20:9613-9617. [PMID: 36420677 DOI: 10.1039/d2ob01923j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A metal-free tandem reduction and N-trifluoroethylation of quinolines and quinoxalines has been developed. It provided a convenient route to access trifluoroethylated tetrahydroquinolines and tetrahydroquinoxalines. This one-pot method avoids the purification process of the intermediate. Mechanistically, the in situ-generated boryl acetal species reacted with tetrahydroquinolines to generate iminiums followed by reduction to give the target compounds.
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Affiliation(s)
- Yi-Na Li
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Ming-Xi Zhou
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Jin-Bo Wu
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Zhen Wang
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Yao-Fu Zeng
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
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24
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Li DH, Li QM, Qi SL, Qin HC, Liang XQ, Li L. Theoretical Study of Hydrogen Production from Ammonia Borane Catalyzed by Metal and Non-Metal Diatom-Doped Cobalt Phosphide. Molecules 2022; 27:8206. [PMID: 36500299 PMCID: PMC9741264 DOI: 10.3390/molecules27238206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
Abstract
The decomposition of ammonia borane (NH3BH3) to produce hydrogen has developed a promising technology to alleviate the energy crisis. In this paper, metal and non-metal diatom-doped CoP as catalyst was applied to study hydrogen evolution from NH3BH3 by density functional theory (DFT) calculations. Herein, five catalysts were investigated in detail: pristine CoP, Ni- and N-doped CoP (CoPNi-N), Ga- and N-doped CoP (CoPGa-N), Ni- and S-doped CoP (CoPNi-S), and Zn- and S-doped CoP (CoPZn-S). Firstly, the stable adsorption structure and adsorption energy of NH3BH3 on each catalytic slab were obtained. Additionally, the charge density differences (CDD) between NH3BH3 and the five different catalysts were calculated, which revealed the interaction between the NH3BH3 and the catalytic slab. Then, four different reaction pathways were designed for the five catalysts to discuss the catalytic mechanism of hydrogen evolution. By calculating the activation energies of the control steps of the four reaction pathways, the optimal reaction pathways of each catalyst were found. For the five catalysts, the optimal reaction pathways and activation energies are different from each other. Compared with undoped CoP, it can be seen that CoPGa-N, CoPNi-S, and CoPZn-S can better contribute hydrogen evolution from NH3BH3. Finally, the band structures and density of states of the five catalysts were obtained, which manifests that CoPGa-N, CoPNi-S, and CoPZn-S have high-achieving catalytic activity and further verifies our conclusions. These results can provide theoretical references for the future study of highly active CoP catalytic materials.
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Affiliation(s)
| | | | | | | | | | - Laicai Li
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu 610068, China
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25
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Nuñez Bahena E, Schafer LL. From Stoichiometric to Catalytic E–H Functionalization by Non-Metallocene Zirconium Complexes─Recent Advances and Mechanistic Insights. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Erick Nuñez Bahena
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Laurel L. Schafer
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
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26
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Brodie CN, Sotorrios L, Boyd TM, Macgregor SA, Weller AS. Dehydropolymerization of H 3B·NMeH 2 Mediated by Cationic Iridium(III) Precatalysts Bearing κ 3- iPr-PN RP Pincer Ligands ( R = H, Me): An Unexpected Inner-Sphere Mechanism. ACS Catal 2022; 12:13050-13064. [PMID: 36313521 PMCID: PMC9594342 DOI: 10.1021/acscatal.2c03778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/27/2022] [Indexed: 11/30/2022]
Abstract
![]()
The dehydropolymerization of H3B·NMeH2 to form N-methylpolyaminoborane using neutral
and
cationic catalysts based on the {Ir(iPr-PNHP)} fragment [iPr-PNHP = κ3-(CH2CH2PiPr2)2NH] is reported. Neutral
Ir(iPr-PNHP)H3 or
Ir(iPr-PNHP)H2Cl
precatalysts show no, or poor and unselective, activity respectively
at 298 K in 1,2-F2C6H4 solution.
In contrast, addition of [NMeH3][BArF4] (ArF = 3,5-(CF3)2C6H3) to Ir(iPr-PNHP)H3 immediately starts catalysis, suggesting that a cationic
catalytic manifold operates. Consistent with this, independently synthesized
cationic precatalysts are active (tested between 0.5 and 2.0 mol %
loading) producing poly(N-methylaminoborane) with Mn ∼ 40,000 g/mol, Đ ∼1.5, i.e., dihydrogen/dihydride, [Ir(iPr-PNHP)(H)2(H2)][BArF4]; σ-amine-borane [Ir(iPr-PNHP)(H)2(H3B·NMe3)][BArF4]; and [Ir(iPr-PNHP)(H)2(NMeH2)][BArF4]. Density functional theory (DFT) calculations
probe hydride exchange processes in two of these complexes and also
show that the barrier to amine-borane dehydrogenation is lower (22.5
kcal/mol) for the cationic system compared with the neutral system
(24.3 kcal/mol). The calculations show that the dehydrogenation proceeds
via an inner-sphere process without metal–ligand cooperativity,
and this is supported experimentally by N–Me substituted [Ir(iPr-PNMeP)(H)2(H3B·NMe3)][BArF4] being
an active catalyst. Key to the lower barrier calculated for the cationic
system is the outer-sphere coordination of an additional H3B·NMeH2 with the N–H group of the ligand.
Experimentally, kinetic studies indicate a complex reaction manifold
that shows pronounced deceleratory temporal profiles. As supported
by speciation and DFT studies, a key observation is that deprotonation
of [Ir(iPr-NHP)(H)2(H2)][BArF4], formed upon amine-borane
dehydrogenation, by the slow in situ formation of NMeH2 (via B–N bond cleavage), results in the formation of essentially
inactive Ir(iPr-PNHP)H3, with a coproduct of [NMeH3]+/[H2B(NMeH2)2]+. While reprotonation
of Ir(iPr-PNHP)H3 results in a return to the cationic cycle, it is proposed, supported
by doping experiments, that reprotonation is attenuated by entrainment
of the [NMeH3]+/[H2B(NMeH2)2]+/catalyst in insoluble polyaminoborane.
The role of [NMeH3]+/[H2B(NMeH2)]+ as chain control agents is also noted.
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Affiliation(s)
| | - Lia Sotorrios
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Timothy M. Boyd
- Department of Chemistry, University of York, York YO10 5DD, U.K
- Chemistry Research Laboratories, University of Oxford, Oxford OX1 3TA, U.K
| | - Stuart A. Macgregor
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
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27
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Chen S, Gong B, Gu J, Lin Y, Yang B, Gu Q, Jin R, Liu Q, Ying W, Shi X, Xu W, Cai L, Li Y, Sun Z, Wei S, Zhang W, Lu J. Dehydrogenation of Ammonia Borane by Platinum‐Nickel Dimers: Regulation of Heteroatom Interspace Boosts Bifunctional Synergetic Catalysis. Angew Chem Int Ed Engl 2022; 61:e202211919. [DOI: 10.1002/anie.202211919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Si Chen
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Bingbing Gong
- Department of Material Science and Engineering University of Science and Technology of China Hefei Anhui 230026 China
| | - Jian Gu
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Yue Lin
- Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Bing Yang
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Liaoning 116023 China
| | - Qingqing Gu
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Liaoning 116023 China
| | - Rui Jin
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Qin Liu
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Wenxiang Ying
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Xianxian Shi
- Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Wenlong Xu
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Lihua Cai
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Yin Li
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Zhihu Sun
- National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230029 China
| | - Shiqiang Wei
- National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230029 China
| | - Wenhua Zhang
- Department of Material Science and Engineering University of Science and Technology of China Hefei Anhui 230026 China
| | - Junling Lu
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
- Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
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28
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Prabu S, Vinu M, Chiang KY. Ultrafine Ru nanoparticles in shape control hollow octahedron MOF derived cobalt oxide@carbon as high-efficiency catalysts for hydrolysis of ammonia borane. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Zeng YF, Zhou MX, Li YN, Wu X, Guo Y, Wang Z. Switchable Reductive N-Trifluoroethylation and N-Trifluoroacetylation of Indoles with Trifluoroacetic Acid and Trimethylamine Borane. Org Lett 2022; 24:7440-7445. [PMID: 36173131 DOI: 10.1021/acs.orglett.2c03011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The metal-free reductive N-trifluoroethylation and N-trifluoroacetylation of indoles have been developed. Bench stable and inexpensive trimethylamine borane and trifluoroacetic acid (TFA) were utilized as the reductive and fluorinating reagents, respectively. These transformations were switchable on the basis of altering the loading of trimethylamine borane and TFA. Preliminary experiments indicated indoline was the common intermediate in these two transformations.
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Affiliation(s)
- Yao-Fu Zeng
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Ming-Xi Zhou
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yi-Na Li
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Xin Wu
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yu Guo
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Zhen Wang
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
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30
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Obi AD, Frey NC, Dickie DA, Webster CE, Gilliard RJ. N‐Heterocyclic Carbene‐Assisted Reversible Migratory Coupling of Aminoborane at Magnesium. Angew Chem Int Ed Engl 2022; 61:e202211496. [DOI: 10.1002/anie.202211496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Akachukwu D. Obi
- Department of Chemistry University of Virginia 409 McCormick Road, PO Box 400319 Charlottesville VA 22904 USA
| | - Nathan C. Frey
- Department of Chemistry University of Virginia 409 McCormick Road, PO Box 400319 Charlottesville VA 22904 USA
| | - Diane A. Dickie
- Department of Chemistry University of Virginia 409 McCormick Road, PO Box 400319 Charlottesville VA 22904 USA
| | - Charles Edwin Webster
- Department of Chemistry Mississippi State University PO Box 9573 Mississippi State MS 39762 USA
| | - Robert J. Gilliard
- Department of Chemistry University of Virginia 409 McCormick Road, PO Box 400319 Charlottesville VA 22904 USA
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31
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Babón JC, Esteruelas MA, López AM, Oñate E. Reactions of an Osmium-Hexahydride Complex with 2-Butyne and 3-Hexyne and Their Performance in the Migratory Hydroboration of Aliphatic Internal Alkynes. Organometallics 2022; 41:2513-2524. [PMID: 36864948 PMCID: PMC9969483 DOI: 10.1021/acs.organomet.2c00338] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Indexed: 11/28/2022]
Abstract
Reactions of the hexahydride OsH6(PiPr3)2 (1) with 2-butyne and 3-hexyne and the behavior of the resulting species toward pinacolborane (pinBH) have been investigated in the search for new hydroboration processes. Complex 1 reacts with 2-butyne to give 1-butene and the osmacyclopropene OsH2(η2-C2Me2)(PiPr3)2 (2). In toluene, at 80 °C, the coordinated hydrocarbon isomerizes into a η4-butenediyl form to afford OsH2(η4-CH2CHCHCH2)(PiPr3)2 (3). Isotopic labeling experiments indicate that the isomerization involves Me-to-COs hydrogen 1,2-shifts, which take place through the metal. The reaction of 1 with 3-hexyne gives 1-hexene and OsH2(η2-C2Et2)(PiPr3)2 (4). Similarly to 2, complex 4 evolves to η4-butenediyl derivatives OsH2(η4-CH2CHCHCHEt)(PiPr3)2 (5) and OsH2(η4-MeCHCHCHCHMe)(PiPr3)2 (6). In the presence of pinBH, complex 2 generates 2-pinacolboryl-1-butene and OsH{κ2-H,H-(H2Bpin)}(η2-HBpin)(PiPr3)2 (7). According to the formation of the borylated olefin, complex 2 is a catalyst precursor for the migratory hydroboration of 2-butyne and 3-hexyne to 2-pinacolboryl-1-butene and 4-pinacolboryl-1-hexene. During the hydroboration, complex 7 is the main osmium species. The hexahydride 1 also acts as a catalyst precursor, but it requires an induction period that causes the loss of 2 equiv of alkyne per equiv of osmium.
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32
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Obi A, Frey N, Dickie D, Webster CE, Gilliard RJ. N‐Heterocyclic Carbene‐Assisted Reversible Migratory Coupling of Aminoborane at Magnesium. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Nathan Frey
- University of Virginia Chemistry UNITED STATES
| | | | | | - Robert J Gilliard
- University of Virginia Chemistry Department of Chemistry409 McCormick RdPO 400319 22904 Charlottesville UNITED STATES
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33
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Chen S, Gong B, Gu J, Lin Y, Yang B, Gu Q, Jin R, Liu Q, Ying W, Shi X, Xu W, Cai L, Li Y, Sun Z, Wei S, Zhang W, Lu J. Dehydrogenation of Ammonia Borane by Platinum‐‐Nickel Dimers: Regulation of the Heteroatom Interspace Boosts Bifunctional Synergetic Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Si Chen
- University of Science and Technology of China Department of Chemical Physics CHINA
| | - Bingbing Gong
- University of Science and Technology of China Department of Material Science and Engineering CHINA
| | - Jian Gu
- University of Science and Technology of China Department of Chemical Physics CHINA
| | - Yue Lin
- University of Science and Technology of China Hefei National Research Center for Physical Sciences at the Microscale CHINA
| | - Bing Yang
- Chinese Academy of Sciences Dalian Institute of Chemical Physics CAS Key Laboratory of Science and Technology on Applied Catalysis CHINA
| | - Qingqing Gu
- Chinese Academy of Sciences Dalian Institute of Chemical Physics CAS Key Laboratory of Science and Technology on Applied Catalysis CHINA
| | - Rui Jin
- University of Science and Technology of China Department of Chemical Physics CHINA
| | - Qin Liu
- University of Science and Technology of China Department of Chemical Physics CHINA
| | - Wenxiang Ying
- University of Science and Technology of China Department of Chemical Physics CHINA
| | - Xianxian Shi
- University of Science and Technology of China Hefei National Research Center for Physical Sciences at the Microscale CHINA
| | - Wenlong Xu
- University of Science and Technology of China Department of Chemical Physics CHINA
| | - Lihua Cai
- University of Science and Technology of China Department of Chemical Physics CHINA
| | - Yin Li
- University of Science and Technology of China Department of Chemical Physics CHINA
| | - Zhihu Sun
- University of Science and Technology of China National Synchrotron Radiation Laboratory CHINA
| | - Shiqiang Wei
- University of Science and Technology of China National Synchrotron Radiation Laboratory CHINA
| | - Wenhua Zhang
- University of Science and Technology of China Department of Material Science and Engineering CHINA
| | - Junling Lu
- University of Science and Technology of China Department of Chemical Physics Jinzhai Road 96#, Baohe District 230026 Hefei CHINA
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34
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Synergistically Photo-Thermo-Catalytic Effect of Metal-Oxide Semiconductors with d10 Electronic Configuration for Hydrogen Generation in NaBH4 Hydrolyzation. Catal Letters 2022. [DOI: 10.1007/s10562-021-03825-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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35
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Jafarzadeh H, Karaman C, Güngör A, Karaman O, Show PL, Sami P, Mehrizi AA. Hydrogen production via sodium borohydride hydrolysis catalyzed by cobalt ferrite anchored nitrogen-and sulfur co-doped graphene hybrid nanocatalyst: Artificial neural network modeling approach. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.05.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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36
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Gogoi A, Singh P, Pal S, Dixit M. Unraveling the Mechanistic Details of Ru-Bis(pyridyl)borate Complex Catalyst for the Dehydrogenation of Ammonia Borane. Inorg Chem 2022; 61:10283-10293. [PMID: 35770787 DOI: 10.1021/acs.inorgchem.2c00339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ru-Bis(pyridyl)borate complex (CAT) is an efficient catalyst for ammonia borane (AB) dehydrogenation. Although the mechanistic pathway of this catalyst has been theoretically investigated previously, the gap between the experimental findings and the computational results could not be bridged thus far. In our study, using density functional theory calculations, we elucidate the mechanism of AB dehydrogenation of CAT at a variable degree of ligand hydrogenation. Our results confirm that the acetonitrile ligands get reduced in the presence of AB and remain hydrogenated. Moreover, in line with experiments, we find that AB dehydrogenation on CAT proceeds via a concerted mechanism (with the free energy energetic span between 25.4 and 32.5 kcal/mol). We find that the ligand reduction alters the electronic structure and activity of CAT and the highest activity of the catalyst is expected at the fifth degree of hydrogenation of ligands with an energetic span of 25.4 kcal/mol. Additionally, the mechanism for the removal of molecular H2 from the catalysts also alters with the degree of ligand hydrogenation. Furthermore, our results show that optimal H2 binding free energy calculations can be used as a descriptor to identify the most active sites. Finally, this work demonstrates that ligand reduction improves the activity of the catalyst. These results highlight the importance of ligand hydrogenation in probing the activity and operating mechanism of the Ru-bis(pyridyl)borate complexes for AB dehydrogenation. Further, we identify a plausible dimer structure and rationalized experimental observation that the deactivation chemistry of this catalyst is different from the Shvo's catalyst.
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Affiliation(s)
- Amrita Gogoi
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata─Mohanpur, Nadia 741 246, West Bengal, India
| | - Priti Singh
- Department of Chemistry, Birla Institute of Technology and Science (BITS)─Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Sourav Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata─Mohanpur, Nadia 741 246, West Bengal, India.,Department of Chemistry, Ashoka University, Sonipat 131029, Haryana, India
| | - Mudit Dixit
- Department of Chemistry, Birla Institute of Technology and Science (BITS)─Pilani, Hyderabad Campus, Hyderabad 500078, India.,Materials Center for Sustainable Energy & Environment (McSEE), BITS Pilani Hyderabad Campus, Hyderabad 500078, India
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37
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Huang YY, Ji LX, He ZH, Ji GF. Enhanced Effect of an External Electric Field on NH 3BH 3 Dehydrogenation: an AIMD Study for Thermolysis. ACS OMEGA 2022; 7:21255-21261. [PMID: 35755330 PMCID: PMC9219047 DOI: 10.1021/acsomega.2c02401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
How to improve the dehydrogenation properties of ammonia borane (AB, NH3BH3) is always a challenge for its practical application in hydrogen storage. In this study, we reveal the enhanced effect of an external electric field (E ext) on AB dehydrogenation by means of the ab initio molecular dynamics method. The molecular rotation induced by an electrostatic force can facilitate the formation of the H-N···B-H framework, which would aggregate into poly-BN species and further suppress the generation of the volatile byproducts. Meanwhile, the dihydrogen bond (N-Hδ+···δ-H-B) is favorably formed under E ext, and the interaction between relevant H atoms is enhanced, leading to a faster H2 liberation. Correspondingly, the apparent activation energy for AB dissociation is greatly reduced from 18.42 to around 15 kcal·mol-1 with the application of an electric field, while that for H2 formation decreases from 20.4 to about 16 kcal·mol-1. In the whole process, the cleavage of the B-H bond is more favorable than that of the N-H bond, no matter whether the application of E ext. Our results give a deep insight into a positive effect of an electric field on AB dehydrogenation, which would provide an important inspiration for hydrogen storage in industry applications.
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Affiliation(s)
- Yao-Yao Huang
- National
Key Laboratory of Shock Wave and Detonation Physics, Institute of
Fluid Physics, China Academy of Engineering
Physics, Mianyang 621900 Sichuan, China
| | - Lin-Xiang Ji
- Department
of Physics and Engineering Physics, University
of Saskatchewan, Saskatoon, Saskatchewan S7N5E2, Canada
| | - Zheng-Hua He
- National
Key Laboratory of Shock Wave and Detonation Physics, Institute of
Fluid Physics, China Academy of Engineering
Physics, Mianyang 621900 Sichuan, China
| | - Guang-Fu Ji
- National
Key Laboratory of Shock Wave and Detonation Physics, Institute of
Fluid Physics, China Academy of Engineering
Physics, Mianyang 621900 Sichuan, China
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38
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Mo B, Li S, Wen H, Zhang H, Zhang H, Wu J, Li B, Hou H. Functional Group Regulated Ni/Ti 3C 2T x (T x = F, -OH) Holding Bimolecular Activation Tunnel for Enhanced Ammonia Borane Hydrolysis. ACS APPLIED MATERIALS & INTERFACES 2022; 14:16320-16329. [PMID: 35352551 DOI: 10.1021/acsami.2c02594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Developing economical and efficient catalyst for hydrogen generation from ammonia borane (AB) hydrolysis is still a huge challenge. As an alternative strategy, the functional group regulation of metal nanoparticles (NPs)-based catalysts is believed to be capable of improving the catalytic activity. Herein, a series of Ni/Ti3C2Tx-Y (Tx = F, -OH; Y denotes etching time (d)) catalysts are synthesized and show remarkably enhanced catalytic activity on the hydrolysis of AB in contrast to the corresponding without regulating. The optimized Ni/Ti3C2Tx-4 with a turnover frequency (TOF) value of 161.0 min-1 exhibits the highest catalytic activity among the non-noble monometallic-based catalyst. Experimental results and theory calculations demonstrate that the excellent catalytic activity benefits from the bimolecular activation channels formed by Ni NPs and Ti3C2Tx-Y. H2O and AB molecules are activated simultaneously in the bimolecular activation tunnel. Bimolecular activation reduces the activation energy of AB hydrolysis, and hydrogen generation rate is promoted. This article provides a new approach to design effective catalysts and further supports the bimolecular activation model for the hydrolysis of AB.
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Affiliation(s)
- Bingyan Mo
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Shuwen Li
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Hao Wen
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Huanhuan Zhang
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Heyao Zhang
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Jie Wu
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Baojun Li
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Hongwei Hou
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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39
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KARAMAN O. Three-dimensional graphene network supported Nickel-Cobalt bimetallic alloy nanocatalyst for hydrogen production by hydrolysis of sodium borohydride and developing of an artificial neural network modeling to forecast hydrogen production rate. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.03.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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40
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Tu K, Büchele S, Mitchell S, Stricker L, Liu C, Goldhahn C, Allaz J, Ding Y, Günther R, Zhang Z, Sun J, Stucki S, Panzarasa G, Zeeman SC, Burgert I, Pérez-Ramírez J, Keplinger T. Natural Wood-Based Catalytic Membrane Microreactors for Continuous Hydrogen Generation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:8417-8426. [PMID: 35107245 DOI: 10.1021/acsami.1c22850] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The development of controlled processes for continuous hydrogen generation from solid-state storage chemicals such as ammonia borane is central to integrating renewable hydrogen into a clean energy mix. However, to date, most reported platforms operate in batch mode, posing a challenge for controllable hydrogen release, catalyst reusability, and large-scale operation. To address these issues, we developed flow-through wood-based catalytic microreactors, characterized by inherent natural oriented microchannels. The prepared structured catalysts utilize silver-promoted palladium nanoparticles supported on metal-organic framework (MOF)-coated wood microreactors as the active phase. Catalytic tests demonstrate their highly controllable hydrogen production in continuous mode, and by adjusting the ammonia borane flow and wood species, we reach stable productivities of up to 10.4 cmH23 min-1 cmcat-3. The modular design of the structured catalysts proves readily scalable. Our versatile approach is applicable for other metals and MOF combinations, thus comprising a sustainable and scalable platform for catalytic dehydrogenations and applications in the energy-water nexus.
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Affiliation(s)
- Kunkun Tu
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland
- WoodTec Group, Cellulose & Wood Materials, EMPA, 8600 Dübendorf, Switzerland
| | - Simon Büchele
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Sharon Mitchell
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Laura Stricker
- Soft Materials, Department of Materials, ETH Zürich, 8093 Zurich, Switzerland
| | - Chun Liu
- Institute of Molecular Plant Biology, Department of Biology, ETH Zürich, 8092 Zürich, Switzerland
| | - Christian Goldhahn
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland
- WoodTec Group, Cellulose & Wood Materials, EMPA, 8600 Dübendorf, Switzerland
| | - Julien Allaz
- Institute of Geochemistry and Petrology, ETH Zürich, 8092 Zürich, Switzerland
| | - Yong Ding
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland
- WoodTec Group, Cellulose & Wood Materials, EMPA, 8600 Dübendorf, Switzerland
| | - Roman Günther
- Laboratory of Adhesives and Polymer Materials, Institute of Materials and Process Engineering, Zürich University of Applied Sciences, 8401 Winterthur, Switzerland
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Zhidong Zhang
- Durability of Engineering Materials, Institute for Building Materials, ETH Zürich, Stefano-Franscini-Platz 3, 8093 Zürich, Switzerland
| | - Jianguo Sun
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland
- WoodTec Group, Cellulose & Wood Materials, EMPA, 8600 Dübendorf, Switzerland
| | - Sandro Stucki
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland
- WoodTec Group, Cellulose & Wood Materials, EMPA, 8600 Dübendorf, Switzerland
| | - Guido Panzarasa
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland
- WoodTec Group, Cellulose & Wood Materials, EMPA, 8600 Dübendorf, Switzerland
| | - Samuel C Zeeman
- Institute of Molecular Plant Biology, Department of Biology, ETH Zürich, 8092 Zürich, Switzerland
| | - Ingo Burgert
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland
- WoodTec Group, Cellulose & Wood Materials, EMPA, 8600 Dübendorf, Switzerland
| | - Javier Pérez-Ramírez
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Tobias Keplinger
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093 Zürich, Switzerland
- WoodTec Group, Cellulose & Wood Materials, EMPA, 8600 Dübendorf, Switzerland
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41
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Perutz RN, Sabo‐Etienne S, Weller AS. Metathesis by Partner Interchange in σ‐Bond Ligands: Expanding Applications of the σ‐CAM Mechanism. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202111462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Sylviane Sabo‐Etienne
- CNRS LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 F-31077 Toulouse Cedex 4 France
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42
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Bhowmik T, Sadhukhan M, Kempasiddaiah M, Barman S. Highly Dispersed Palladium Nanoparticles Supported on Graphitic Carbon Nitride for Selective Hydrogenation of Nitro Compounds and Ullmann Coupling Reaction. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tanmay Bhowmik
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI Odisha
| | - Mriganka Sadhukhan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI Odisha
| | - Manjunatha Kempasiddaiah
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI Odisha
| | - Sudip Barman
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI Odisha
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43
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Decker D, Wei Z, Rabeah J, Drexler HJ, Brückner A, Jiao H, Beweries T. Catalytic and mechanistic studies of a highly active and E-selective Co(II) PNNH pincer catalyst system for transfer-semihydrogenation of internal alkynes. Inorg Chem Front 2022. [DOI: 10.1039/d1qi00998b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report the application of a Co(II) PNNH pincer catalyst system (PNNH = 2-(5-(t-butyl)-1H-pyrazol-3-yl)-6-(dialkylphosphinomethyl)pyridine) for the highly E-selective transfer semihydrogenation of internal diaryl alkynes using methanol and ammonia borane...
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44
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Tang Q, Li SJ, Ye X, Yuan T, Zhao K, He Y, Shan C, Wojtas L, Richardson D, Lan Y, Shi X. Design and synthesis of stable four-coordinated benzotriazole-borane with tunable fluorescence emission. Chem Sci 2022; 13:5982-5987. [PMID: 35685813 PMCID: PMC9132079 DOI: 10.1039/d2sc01103d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/18/2022] [Indexed: 11/21/2022] Open
Abstract
A new class of stable four-coordinated benzotriazole-borane compounds was developed via gold-catalyzed alkyne hydroboration. The application of polymeric (BH2CN)n reagent gave the formation of cyano-amine-boranes (CAB) complexes with less basic N-heterocyclic amines and anilines. Various new CABs were investigated in catalytic hydroboration to synthesize N–B cycles. The 1,2,3-benzotriazoles were identified as the only feasible N-source, giving the four coordinated borane N–B cycles (BTAB) in excellent yields (up to 90%) with good functional group tolerability. This new class of polycyclic N–B compounds showed excellent stability toward acid, base, high temperature, and photo-irradiation. The facile synthesis, excellent stability, strong and tunable fluorescence emission make BTAB interesting new fluorescent probes for future chemical and biological applications. A new class of benzotriazole-boranes was developed via gold-catalyzed alkyne hydroboration. The facile synthesis, excellent stability, strong and tunable fluorescence emission make BTAB new fluorescent probes for chemical and biological applications.![]()
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Affiliation(s)
- Qi Tang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, USA
| | - Shi-Jun Li
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Xiaohan Ye
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, USA
| | - Teng Yuan
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, USA
| | - Kai Zhao
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, USA
| | - Ying He
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, USA
| | - Chuan Shan
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, USA
| | - David Richardson
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, USA
| | - Yu Lan
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, USA
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45
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Jian K, Li B, Zhu S, Xuan Q, Song Q. Chemoselective reduction of α,β-unsaturated ketones to allylic alcohols under catalyst-free conditions. Org Chem Front 2022. [DOI: 10.1039/d1qo01754c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A strategy of chemoselective reduction of α, β-unsaturated ketones was developed in our group. H3N·BH3 would prefer to coordinate with CO bond, forming six-membered ring, and ketones were hydrogenated via concerted double-hydrogen-transfer process.
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Affiliation(s)
- Kaixia Jian
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Bingnan Li
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Shuxian Zhu
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Qingqing Xuan
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
- Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
- State Key Laboratory of Organometallic Chemistry and Key Laboratory of Organo-fluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007
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46
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Babón JC, Esteruelas MA, López AM. Homogeneous catalysis with polyhydride complexes. Chem Soc Rev 2022; 51:9717-9758. [DOI: 10.1039/d2cs00399f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This review analyzes the role of transition metal polyhydrides as homogeneous catalysts for organic reactions. Discussed reactions involve nearly every main organic functional group.
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Affiliation(s)
- Juan C. Babón
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Miguel A. Esteruelas
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Ana M. López
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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47
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Balla A, Nagyhazi M, Turczel G, Solt HE, Mihályi MR, Hancsók J, Valyon J, Nagy T, Kéki S, Anastas P, Tuba R. Hydrolytic Dehydrogenation of Ammonia Borane in Neat Water Using Recyclable Zeolite-Supported Cyclic Alkyl Amino Carbene (CAAC)-Ru Catalysts. NEW J CHEM 2022. [DOI: 10.1039/d2nj03334h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic alkyl amino mono- and biscarbene ruthenium (CAAC-Ru) complexes were immobilized on mesoporous Y zeolite (catalysts 3 and 4) and showed high activity and stability in ammonia borane (AB) hydrolytic...
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48
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Kirkina VA, Kissel AA, Selikhov AN, Nelyubina YV, Filippov OA, Belkova NV, Trifonov AA, Shubina ES. Amine-boranes reactions promoted by lanthanide(II) ions. Chem Commun (Camb) 2021; 58:859-862. [PMID: 34935012 DOI: 10.1039/d1cc06401k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic activity in amine-borane dehydrogenation is shown for the first time for Ln(II) species using complexes [{(p-tBu-C6H4)2CH}2M·L] (M = Yb, Sm, L = (DME)2, TMEDA). The protonation of M(II)-C bonds with HNR1R2BH3 affords amidoborane complexes [M(NR1R2BH3)2L], which under excess HNMe2BH3 transform to [NMe2BH2NMe2BH3]- derivatives, both serving as the dehydrocoupling intermediates.
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Affiliation(s)
- Vladislava A Kirkina
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS) of Russian Academy of Sciences, 28 Vavilov str., GSP-1, B-334, Moscow, 119991, Russia.
| | - Alexander A Kissel
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS) of Russian Academy of Sciences, 28 Vavilov str., GSP-1, B-334, Moscow, 119991, Russia.
| | - Alexander N Selikhov
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS) of Russian Academy of Sciences, 28 Vavilov str., GSP-1, B-334, Moscow, 119991, Russia. .,G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, Nizhny Novgorod, 603950, Russia.
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS) of Russian Academy of Sciences, 28 Vavilov str., GSP-1, B-334, Moscow, 119991, Russia.
| | - Oleg A Filippov
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS) of Russian Academy of Sciences, 28 Vavilov str., GSP-1, B-334, Moscow, 119991, Russia.
| | - Natalia V Belkova
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS) of Russian Academy of Sciences, 28 Vavilov str., GSP-1, B-334, Moscow, 119991, Russia.
| | - Alexander A Trifonov
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS) of Russian Academy of Sciences, 28 Vavilov str., GSP-1, B-334, Moscow, 119991, Russia. .,G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, Nizhny Novgorod, 603950, Russia.
| | - Elena S Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS) of Russian Academy of Sciences, 28 Vavilov str., GSP-1, B-334, Moscow, 119991, Russia.
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49
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Brodie CN, Boyd TM, Sotorríos L, Ryan DE, Magee E, Huband S, Town JS, Lloyd-Jones GC, Haddleton DM, Macgregor SA, Weller AS. Controlled Synthesis of Well-Defined Polyaminoboranes on Scale Using a Robust and Efficient Catalyst. J Am Chem Soc 2021; 143:21010-21023. [PMID: 34846131 DOI: 10.1021/jacs.1c10888] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The air tolerant precatalyst, [Rh(L)(NBD)]Cl ([1]Cl) [L = κ3-(iPr2PCH2CH2)2NH, NBD = norbornadiene], mediates the selective synthesis of N-methylpolyaminoborane, (H2BNMeH)n, by dehydropolymerization of H3B·NMeH2. Kinetic, speciation, and DFT studies show an induction period in which the active catalyst, Rh(L)H3 (3), forms, which sits as an outer-sphere adduct 3·H3BNMeH2 as the resting state. At the end of catalysis, dormant Rh(L)H2Cl (2) is formed. Reaction of 2 with H3B·NMeH2 returns 3, alongside the proposed formation of boronium [H2B(NMeH2)2]Cl. Aided by isotopic labeling, Eyring analysis, and DFT calculations, a mechanism is proposed in which the cooperative "PNHP" ligand templates dehydrogenation, releasing H2B═NMeH (ΔG‡calc = 19.6 kcal mol-1). H2B═NMeH is proposed to undergo rapid, low barrier, head-to-tail chain propagation for which 3 is the catalyst/initiator. A high molecular weight polymer is formed that is relatively insensitive to catalyst loading (Mn ∼71 000 g mol-1; Đ, of ∼ 1.6). The molecular weight can be controlled using [H2B(NMe2H)2]Cl as a chain transfer agent, Mn = 37 900-78 100 g mol-1. This polymerization is suggested to arise from an ensemble of processes (catalyst speciation, dehydrogenation, propagation, chain transfer) that are geared around the concentration of H3B·NMeH2. TGA and DSC thermal analysis of polymer produced on scale (10 g, 0.01 mol % [1]Cl) show a processing window that allows for melt extrusion of polyaminoborane strands, as well as hot pressing, drop casting, and electrospray deposition. By variation of conditions in the latter, smooth or porous microstructured films or spherical polyaminoboranes beads (∼100 nm) result.
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Affiliation(s)
- Claire N Brodie
- Department of Chemistry, University of York, Heslington, York YO31 1ES, U.K
| | - Timothy M Boyd
- Department of Chemistry, University of York, Heslington, York YO31 1ES, U.K.,Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K
| | - Lia Sotorríos
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - David E Ryan
- Department of Chemistry, University of York, Heslington, York YO31 1ES, U.K.,Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K
| | - Eimear Magee
- International Institute for Nanocomposites Manufacturing, WMG, University of Warwick, Coventry CV4 7AL, U.K
| | - Steven Huband
- Department of Physics, University of Warwick, Coventry CV4 7AL, U.K
| | - James S Town
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Guy C Lloyd-Jones
- School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, Scotland, U.K
| | - David M Haddleton
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Stuart A Macgregor
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Andrew S Weller
- Department of Chemistry, University of York, Heslington, York YO31 1ES, U.K
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Ortega-Lepe I, Rossin A, Sánchez P, Santos LL, Rendón N, Álvarez E, López-Serrano J, Suárez A. Ammonia-Borane Dehydrogenation Catalyzed by Dual-Mode Proton-Responsive Ir-CNN H Complexes. Inorg Chem 2021; 60:18490-18502. [PMID: 34784204 PMCID: PMC8653221 DOI: 10.1021/acs.inorgchem.1c03056] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Metal complexes incorporating
proton-responsive ligands have been
proved to be superior catalysts in reactions involving the H2 molecule. In this contribution, a series of IrIII complexes
based on lutidine-derived CNNH pincers containing N-heterocyclic
carbene and secondary amino NHR [R = Ph (4a), tBu (4b), benzyl (4c)] donors
as flanking groups have been synthesized and tested in the dehydrogenation
of ammonia–borane (NH3BH3, AB) in the
presence of substoichiometric amounts (2.5 equiv) of tBuOK. These preactivated derivatives are efficient catalysts in AB
dehydrogenation in THF at room temperature, albeit significantly different
reaction rates were observed. Thus, by using 0.4 mol % of 4a, 1.0 equiv of H2 per mole of AB was released
in 8.5 min (turnover frequency (TOF50%) = 1875 h–1), while complexes 4b and 4c (0.8 mol %)
exhibited lower catalytic activities (TOF50% = 55–60
h–1). 4a is currently the best performing
IrIII homogeneous catalyst for AB dehydrogenation. Kinetic
rate measurements show a zero-order dependence with respect to AB,
and first order with the catalyst in the dehydrogenation with 4a (−d[AB]/dt = k[4a]). Conversely, the reaction with 4b is second order in AB and first order in the catalyst (−d[AB]/dt = k[4b][AB]2).
Moreover, the reactions of the derivatives 4a and 4b with an excess of tBuOK (2.5 equiv) have
been analyzed through NMR spectroscopy. For the former precursor,
formation of the iridate 5 was observed as a result of
a double deprotonation at the amine and the NHC pincer arm. In marked
contrast, in the case of 4b, a monodeprotonated (at the
pincer NHC-arm) species 6 is observed upon reaction with tBuOK. Complex 6 is capable of activating H2 reversibly to yield the trihydride derivative 7. Finally, DFT calculations of the first AB dehydrogenation step
catalyzed by 5 has been performed at the DFT//MN15 level
of theory in order to get information on the predominant metal–ligand
cooperation mode. Iridium complexes
based on CNNH ligands containing
two potential proton-responsive sites—a lutidine scaffold and
a secondary amino group—have been tested in the dehydrogenation
of ammonia-borane. Upon reaction with base, depending on the amino
group acidity, mono- or doubly deprotonated species exhibiting significantly
different catalytic activities were observed.
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Affiliation(s)
- Isabel Ortega-Lepe
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Andrea Rossin
- Istituto di Chimica dei Composti Organometallici - Consiglio Nazionale delle Ricerche (ICCOM - CNR). Via Madonna del Piano 10, 50019, Sesto Fiorentino Italy
| | - Práxedes Sánchez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Laura L Santos
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Nuria Rendón
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Joaquín López-Serrano
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Andrés Suárez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
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