1
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Singh T, Chakraborty S. Molybdenum-catalyzed hydrogenation of carbon dioxide, bicarbonate, and inorganic carbonates to formates. Dalton Trans 2024; 53:10244-10249. [PMID: 38829152 DOI: 10.1039/d4dt00916a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Herein, we report the hydrogenation of carbon dioxide to sodium formate catalyzed by low-valent molybdenum phosphine complexes. The 1,3-bis(diphenylphosphino)propane (DPPP)-based Mo complex was found to be an efficient catalyst in the presence of NaOH affording formate with a TON of 975 at 130 °C in THF/H2O after 24 h utilizing 40 bar (CO2 : H2 = 10 : 30) pressure. The complex was also active in the hydrogenation of sodium bicarbonate and inorganic carbonates to the corresponding formates. Mechanistic investigation revealed that the reaction proceeded via an intermediate formato complex.
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Affiliation(s)
- Tushar Singh
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan, India.
| | - Subrata Chakraborty
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan, India.
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2
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Xue M, Peng Z, Tao K, Jia J, Song D, Tung CH, Wang W. Catalytic hydrogenation of olefins by a multifunctional molybdenum-sulfur complex. Nat Commun 2024; 15:797. [PMID: 38280870 PMCID: PMC10821942 DOI: 10.1038/s41467-024-45018-3] [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: 07/19/2023] [Accepted: 01/12/2024] [Indexed: 01/29/2024] Open
Abstract
Exploration of molybdenum complexes as homogeneous hydrogenation catalysts has garnered significant attention, but hydrogenation of unactivated olefins under mild conditions are scarce. Here, we report the synthesis of a molybdenum complex, [Cp*Mo(Ph2PC6H4S-CH = CH2)(Py)]+ (2), which exhibits intriguing reactivity toward C2H2 and H2 under ambient pressure. This vinylthioether complex showcases efficient catalytic activity in the hydrogenation of various aromatic and aliphatic alkenes, demonstrating a broad substrate scope without the need for any additives. The catalytic pathway involves an uncommon oxidative addition of H2 to the cationic Mo(II) center, resulting in a Mo(IV) dihydride intermediate. Moreover, complex 2 also shows catalytic activity toward C2H2, leading to the production of polyacetylene and the extension of the vinylthioether ligand into a pendant triene chain.
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Affiliation(s)
- Minghui Xue
- School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, China
| | - Zhiqiang Peng
- College of Chemistry, Beijing Normal University, 100875, Beijing, China
| | - Keyan Tao
- College of Chemistry, Beijing Normal University, 100875, Beijing, China
| | - Jiong Jia
- School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, China
| | - Datong Song
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada.
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, China
| | - Wenguang Wang
- School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, China.
- College of Chemistry, Beijing Normal University, 100875, Beijing, China.
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3
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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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4
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Both N, Spannenberg A, Junge K, Beller M. Low-Valent Molybdenum PNP Pincer Complexes as Catalysts for the Semihydrogenation of Alkynes. Organometallics 2022; 41:1797-1805. [PMID: 36156902 PMCID: PMC9490815 DOI: 10.1021/acs.organomet.1c00709] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Low-valent molybdenum PNP pincer complexes were studied as catalysts for the semihydrogenation of alkynes. For that purpose, tBu-substituted PNP complexes PNP tBuMo(CO)2 (6a) and PNP tBuMo(CO)3 (6c) and the NNP complex NNP iPrMo(CO)2(PPh3) ((rac)-7) were synthesized and characterized. By utilizing the cyclohexyl-substituted complex PNPCyMo(CO)2(CH3CN) (5a), several diphenylacetylene derivatives are transformed to the corresponding (Z)-alkenes with good to very good diastereoselectivities (up to 91:9). Mechanistic experiments indicate an outer-sphere mechanism including metal-ligand cooperativity.
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Affiliation(s)
- Niklas
F. Both
- Leibniz-Institut für
Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für
Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Kathrin Junge
- Leibniz-Institut für
Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut für
Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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5
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Yang S, Kim BM. Reduction of imines with a reusable bimetallic PdCo-Fe 3O 4 catalyst at room temperature under atmospheric pressure of H 2. RSC Adv 2022; 12:2436-2442. [PMID: 35425266 PMCID: PMC8979128 DOI: 10.1039/d1ra08552b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 12/27/2021] [Indexed: 02/01/2023] Open
Abstract
Bimetallic nanocatalysts have been used for the development of organic reactions, owing to the synergistic effect between the transition metals. A new procedure for synthesizing amines by the reduction of imines with H2 at atmospheric pressure and room temperature in the presence of PdCo–Fe3O4 nanoparticles is reported. The straightforward procedure, mild reaction conditions, high turnover number, and recyclability extend the scope of this reaction to practical applications. A catalytic procedure that has mild reaction conditions, high turnover number, and the recyclability of the catalyst is presented, whereby the synthesis of amines through the reduction of imines employing PdCo–Fe3O4 under atmospheric pressure of H2 is achieved.![]()
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Affiliation(s)
- Sabyuk Yang
- Department of Chemistry, College of Natural Sciences, Seoul National University Seoul 08826 South Korea
| | - Byeong Moon Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University Seoul 08826 South Korea
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6
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Wang Z, Liu Y, Mingyang H, Ma N, Lyu Q, Liu Q, Sun WH. Efficient transfer hydrogenation of ketones by molybdenum complexes through comprehensively verifying auxiliary ligands. Dalton Trans 2022; 51:10983-10991. [DOI: 10.1039/d2dt01177h] [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
Molybdenum complexes, ligated with N1,N1-dialkyl-N2-(5,6,7,8-tetrahydroquinolin-8-yl)ethane-1,2-diamines along with auxiliary ligands, provide various structural features as [NNH/NNHN]Mo(CO)4/3 (Mo1 – Mo3), [NNHN]Mo(CO)2Br] (Mo4 – Mo5), [NNH]Mo(CO)(η3-C3H5)Br](Mo6) and [NNHN/S] Mo(CO)(PPh3)2] (Mo7 – Mo8). All...
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7
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Lücke MP, Yao S, Driess M. Boosting homogeneous chemoselective hydrogenation of olefins mediated by a bis(silylenyl)terphenyl-nickel(0) pre-catalyst. Chem Sci 2021; 12:2909-2915. [PMID: 34164057 PMCID: PMC8179395 DOI: 10.1039/d0sc06471h] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/04/2021] [Indexed: 11/21/2022] Open
Abstract
The isolable chelating bis(N-heterocyclic silylenyl)-substituted terphenyl ligand [SiII(Terp)SiII] as well as its bis(phosphine) analogue [PIII(Terp)PIII] have been synthesised and fully characterised. Their reaction with Ni(cod)2 (cod = cycloocta-1,5-diene) affords the corresponding 16 VE nickel(0) complexes with an intramolecular η 2-arene coordination of Ni, [E(Terp)E]Ni(η 2-arene) (E = PIII, SiII; arene = phenylene spacer). Due to a strong cooperativity of the Si and Ni sites in H2 activation and H atom transfer, [SiII(Terp)SiII]Ni(η 2-arene) mediates very effectively and chemoselectively the homogeneously catalysed hydrogenation of olefins bearing functional groups at 1 bar H2 pressure and room temperature; in contrast, the bis(phosphine) analogous complex shows only poor activity. Catalytic and stoichiometric experiments revealed the important role of the η2-coordination of the Ni(0) site by the intramolecular phenylene with respect to the hydrogenation activity of [SiII(Terp)SiII]Ni(η 2-arene). The mechanism has been established by kinetic measurements, including kinetic isotope effect (KIE) and Hammet-plot correlation. With this system, the currently highest performance of a homogeneous nickel-based hydrogenation catalyst of olefins (TON = 9800, TOF = 6800 h-1) could be realised.
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Affiliation(s)
- Marcel-Philip Lücke
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 115, Sekr. C2 D-10623 Berlin Germany
| | - Shenglai Yao
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 115, Sekr. C2 D-10623 Berlin Germany
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 115, Sekr. C2 D-10623 Berlin Germany
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8
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Leischner T, Spannenberg A, Junge K, Beller M. Synthesis of Molybdenum Pincer Complexes and Their Application in the Catalytic Hydrogenation of Nitriles. ChemCatChem 2020. [DOI: 10.1002/cctc.202000736] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Thomas Leischner
- Leibniz Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Anke Spannenberg
- Leibniz Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Kathrin Junge
- Leibniz Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz Institute for Catalysis Albert-Einstein-Straße 29a 18059 Rostock Germany
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9
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Merz LS, Ballmann J, Gade LH. Phosphines and
N
‐Heterocycles Joining Forces: an Emerging Structural Motif in PNP‐Pincer Chemistry. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000206] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lukas S. Merz
- Anorganisch‐Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Joachim Ballmann
- Anorganisch‐Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Lutz H. Gade
- Anorganisch‐Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
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10
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Hydrogenation Reactions Catalyzed by PNP-Type Complexes Featuring a HN(CH2CH2PR2)2 Ligand. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Leischner T, Artús Suarez L, Spannenberg A, Junge K, Nova A, Beller M. Highly selective hydrogenation of amides catalysed by a molybdenum pincer complex: scope and mechanism. Chem Sci 2019; 10:10566-10576. [PMID: 32110342 PMCID: PMC7020655 DOI: 10.1039/c9sc03453f] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 09/21/2019] [Indexed: 12/27/2022] Open
Abstract
A series of molybdenum pincer complexes has been shown for the first time to be active in the catalytic hydrogenation of amides.
A series of molybdenum pincer complexes has been shown for the first time to be active in the catalytic hydrogenation of amides. Among the tested catalysts, Mo-1a proved to be particularly well suited for the selective C–N hydrogenolysis of N-methylated formanilides. Notably, high chemoselectivity was observed in the presence of certain reducible groups including even other amides. The general catalytic performance as well as selectivity issues could be rationalized taking an anionic Mo(0) as the active species. The interplay between the amide C
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O reduction and the catalyst poisoning by primary amides accounts for the selective hydrogenation of N-methylated formanilides. The catalyst resting state was found to be a Mo–alkoxo complex formed by reaction with the alcohol product. This species plays two opposed roles – it facilitates the protolytic cleavage of the C–N bond but it encumbers the activation of hydrogen.
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Affiliation(s)
- Thomas Leischner
- Leibniz Institut für Katalyse e. V. , Albert-Einstein-Straße 29a , Rostock , 18059 , Germany .
| | - Lluis Artús Suarez
- Hylleraas Centre for Quantum Molecular Sciences , Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , N-0315 , Oslo , Norway .
| | - Anke Spannenberg
- Leibniz Institut für Katalyse e. V. , Albert-Einstein-Straße 29a , Rostock , 18059 , Germany .
| | - Kathrin Junge
- Leibniz Institut für Katalyse e. V. , Albert-Einstein-Straße 29a , Rostock , 18059 , Germany .
| | - Ainara Nova
- Hylleraas Centre for Quantum Molecular Sciences , Department of Chemistry , University of Oslo , P.O. Box 1033, Blindern , N-0315 , Oslo , Norway .
| | - Matthias Beller
- Leibniz Institut für Katalyse e. V. , Albert-Einstein-Straße 29a , Rostock , 18059 , Germany .
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12
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Abstract
Abstract
This review focuses on the selective catalytic hydrogenation of nitriles to primary amines both homogeneously and heterogeneously with transition metal-based catalysts in the view of nitriles as hydrogen carriers. Nitriles can be reduced with two equivalents of H2 to primary amines, thus having a great potential to serve as liquid organic hydrogen carriers (LOHCs) for hydrogen storage. Imines are intermediates in the hydrogenation of nitriles to amines, thus they can also serve as potential LOHCs, however with a lower hydrogen storage capacity (HSC).
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13
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Bifunctional aliphatic PNP pincer catalysts for hydrogenation: Mechanisms and scope. ADVANCES IN INORGANIC CHEMISTRY 2019. [DOI: 10.1016/bs.adioch.2018.10.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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14
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Leischner T, Spannenberg A, Junge K, Beller M. Molecular Defined Molybdenum–Pincer Complexes and Their Application in Catalytic Hydrogenations. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00410] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Leischner
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Kathrin Junge
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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15
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Wei Z, Junge K, Beller M, Jiao H. Exploring the activities of vanadium, niobium, and tantalum PNP pincer complexes in the hydrogenation of phenyl-substituted C N, C N, C C, C C, and C O functional groups. CR CHIM 2018. [DOI: 10.1016/j.crci.2017.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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Wei Z, de Aguirre A, Junge K, Beller M, Jiao H. Exploring the mechanisms of aqueous methanol dehydrogenation catalyzed by defined PNP Mn and Re pincer complexes under base-free as well as strong base conditions. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00746b] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanisms of aqueous methanol dehydrogenation reaction catalyzed by defined Mn and Re pincer complexes under different conditions were computed.
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Affiliation(s)
- Zhihong Wei
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
| | - Adiran de Aguirre
- Institute of Chemical Research of Catalonia
- ICIQ
- The Barcelona Institute of Science and Technology
- Tarragona
- Spain
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
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17
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Bifunctional NiGa Layered Double Hydroxide for the Aerobic Oxidation/ Condensation Tandem Reaction between Aromatic Alcohols and Active Methylene Compounds. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700352] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Wei Z, Junge K, Beller M, Jiao H. Hydrogenation of phenyl-substituted CN, CN,CC, CC and CO functional groups by Cr, Mo and W PNP pincer complexes – a DFT study. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00629b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrogenation of phenyl-substituted CN, CN, CC, CC and CO functional groups catalyzed by PNP pincer amido M(NO)(CO)(PNP) and amino HM(NO)(CO)(PNHP) complexes [M = Cr, Mo and W; PNP = N(CH2CH2P(isopropyl)2)2] has been computed.
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Affiliation(s)
- Zhihong Wei
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- Rostock
- Germany
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- Rostock
- Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- Rostock
- Germany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- Rostock
- Germany
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19
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Dub PA, Scott BL, Gordon JC. First-row transition metal complexes of ENENES ligands: the ability of the thioether donor to impact the coordination chemistry. Dalton Trans 2016; 45:1560-71. [DOI: 10.1039/c5dt03855c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The reactions of two variants of ENENES ligands, E(CH2)2NH(CH)2SR, where E = 4-morpholinyl, R = Ph (a), Bn (b) with MCl2 (M = Mn, Fe, Co, Ni and Cu) in coordinating solvents (MeCN, EtOH) affords isolable complexes, whose magnetic susceptibility measurements suggest paramagnetism and a high-spin formulation.
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Affiliation(s)
- Pavel A. Dub
- Chemistry Division
- Los Alamos National Laboratory
- Los Alamos
- USA
| | - Brian L. Scott
- Materials and Physics Applications Division
- Los Alamos National Laboratory
- Los Alamos
- USA
| | - John C. Gordon
- Chemistry Division
- Los Alamos National Laboratory
- Los Alamos
- USA
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20
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Chakraborty S, Kunjanpillai R, Blacque O, Berke H. Ullmann‐Type and Related Redox Reactions of Nitrosyl Molybdenum Complexes Bearing a Large‐Bite‐Angle Diphosphine. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Subrata Chakraborty
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland, http://www.chem.uzh.ch/research/emeriti/berke/curriculumVitae.html
| | - Rajesh Kunjanpillai
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland, http://www.chem.uzh.ch/research/emeriti/berke/curriculumVitae.html
| | - Olivier Blacque
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland, http://www.chem.uzh.ch/research/emeriti/berke/curriculumVitae.html
| | - Heinz Berke
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland, http://www.chem.uzh.ch/research/emeriti/berke/curriculumVitae.html
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21
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Dub PA, Scott BL, Gordon JC. Air-Stable NNS (ENENES) Ligands and Their Well-Defined Ruthenium and Iridium Complexes for Molecular Catalysis. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00432] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Pavel A. Dub
- Chemistry Division, and ‡Materials and Physics Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Brian L. Scott
- Chemistry Division, and ‡Materials and Physics Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - John C. Gordon
- Chemistry Division, and ‡Materials and Physics Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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22
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Chakraborty S, Blacque O, Berke H. Ligand assisted carbon dioxide activation and hydrogenation using molybdenum and tungsten amides. Dalton Trans 2015; 44:6560-70. [DOI: 10.1039/c5dt00278h] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molybdenum and tungsten amides M(NO)(CO)(PNP) {M = Mo, 3a; W, 3b; PNP = (iPr2PCH2CH2)2N} can activate CO2 at room temperature forming carbamate species M(NO)(CO)(PNP)(OCO) (M = Mo, 4a(trans); W = 4b(trans). Employing 3a,b stoichiometric hydrogenation of carbon dioxide could be demonstrated.
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Affiliation(s)
| | - Olivier Blacque
- Departent of Chemistry
- University of Zürich
- 8057 Zürich
- Switzerland
| | - Heinz Berke
- Departent of Chemistry
- University of Zürich
- 8057 Zürich
- Switzerland
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23
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Chakraborty S, Blacque O, Fox T, Berke H. Trisphosphine-Chelate-Substituted Molybdenum and Tungsten Nitrosyl Hydrides as Highly Active Catalysts for Olefin Hydrogenations. Chemistry 2014; 20:12641-54. [PMID: 25125283 DOI: 10.1002/chem.201402736] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 05/20/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Subrata Chakraborty
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich (Switzerland)
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24
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Chakraborty S, Blacque O, Fox T, Berke H. Hydrogenation of Imines Catalyzed by Trisphosphine-Substituted Molybdenum and Tungsten Nitrosyl Hydrides and Co-Catalytic Acid. Chem Asian J 2014; 9:2896-907. [DOI: 10.1002/asia.201402280] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Indexed: 11/10/2022]
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25
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Dai QX, Seino H, Mizobe Y. Linear Connection of Four Nitrile Molecules on the Tetraphosphine Complexes of Tungsten and Molybdenum. Organometallics 2014. [DOI: 10.1021/om500405f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qi Xiu Dai
- Institute
of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Hidetake Seino
- Faculty
of Education and Human Studies, Akita University, 1-1 Tegata-Gakuenmachi, Akita 010-8502, Japan
| | - Yasushi Mizobe
- Institute
of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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26
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Chakraborty S, Berke H. Homogeneous Hydrogenation of Nitriles Catalyzed by Molybdenum and Tungsten Amides. ACS Catal 2014. [DOI: 10.1021/cs5004646] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Heinz Berke
- Institute of Chemistry, University of Zürich, 8057, Zürich, Switzerland
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