1
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Ghosh M, Parvin N, Panwaria P, Tothadi S, Bakthavatsalam R, Therambram A, Khan S. Diverse structural reactivity patterns of a POCOP ligand with coinage metals. Dalton Trans 2024; 53:7763-7774. [PMID: 38619861 DOI: 10.1039/d3dt03921h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
We have utilised the 4,6-di-tert-butyl resorcinol bis(diphenylphosphinite) (POCOP) ligand for exploring its coordination ability towards group 11 metal centres. The treatment of the bidentate ligand 1 with various coinage metal precursors afforded a wide range of structurally diverse complexes 2-12, depending upon the metal precursors used. This furnishes several multinuclear Cu(I) complexes with dimeric (2) and tetrameric cores (3, 4, and 5). The tetrameric stairstep complex 4 shows thermochromic behaviour, whereas the dimeric complex 2 and tetrameric complex 3 show luminescence properties at cryogenic temperatures. Interestingly, the halide substitution reaction of the dimeric complex 2 with KPPh2 produces a unique mixed phosphine-based tetrameric Cu(I) complex, 5. Treatment of the POCOP ligand with [CuBF4(CH3CN)4] in the presence of 2,2'-bipyridine afforded heteroleptic complex 6, consisting of tri- and tetra-coordinated cationic Cu(I) centres. Furthermore, we could also isolate cubane (8) and stairstep (9) complexes of Ag(I). The cationic Au(I) complex (12) was obtained from the dinuclear Au(I) complex of POCOP, 11. Complex 12 revealed the presence of a strong intramolecular aurophilic interaction with an Au⋯Au bond distance of 3.1143(9) Å. Subsequently, the photophysical properties of these complexes have been studied. All the complexes were characterised by single-crystal X-ray diffraction studies, routine NMR techniques, and mass spectroscopy.
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Affiliation(s)
- Moushakhi Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Nasrina Parvin
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Prakash Panwaria
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Srinu Tothadi
- CSIR-Central Salt and Marine Chemicals Research Institute, Gijub Badheka Marg, Bhavnagar 364002, India
| | - Rangarajan Bakthavatsalam
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Srinivasapuram-Jangalapalli Village, Tirupati 517619, India
| | - Arshad Therambram
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Shabana Khan
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
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2
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Pavun A, Niess R, Scheibel LA, Seidl M, Hohloch S. A mesoionic carbene stabilized nickel(II) hydroxide complex: a facile precursor for C-H activation chemistry. Dalton Trans 2024; 53:2749-2761. [PMID: 38226674 DOI: 10.1039/d3dt03746k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
We report the synthesis of a new nickel(II) hydroxide complex 2 supported by a rigid, tridentate triazolylidene-carbazolid ligand. The complex can be accessed in high yields following a simple and stepwise extraction protocol using dichloromethane and aqueous ammonium chloride followed by aqeous sodium hydroxide solution. We found that complex 2 is highly basic, undergoing various deprotonation/desilylation reactions with E-H and C-H acidic and silylated compounds. In this context we synthesized a variety of novel, functionalized nickel(II) complexes with trimethylsilylolate (3), trityl sulfide (4), tosyl amide (5), azido (6), pyridine (7), acetylide (8, 9), fluoroarene (10 & 11) and enolate (12) ligands. We furthermore found that 2 reacts with malonic acid dimethyl ester in a knoevennagel-type condensation reaction, giving access to a new enolate ligand in complex 13, consisting of two malonic acid units. Furthermore, complex 2 reacts with acetonitrile to form the cyanido complex 14. The formation of complexes 13 and 14 is particularly interesting, as they underline the potential of complex 2 in both C-C bond formation and cleavage reactions.
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Affiliation(s)
- Anna Pavun
- Universität Innsbruck, Department of General, Inorganic and Theoretical Chemistry, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Raffael Niess
- Universität Innsbruck, Department of General, Inorganic and Theoretical Chemistry, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Lucas A Scheibel
- Universität Innsbruck, Department of General, Inorganic and Theoretical Chemistry, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Michael Seidl
- Universität Innsbruck, Department of General, Inorganic and Theoretical Chemistry, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Stephan Hohloch
- Universität Innsbruck, Department of General, Inorganic and Theoretical Chemistry, Innrain 80-82, 6020 Innsbruck, Austria.
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3
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Álvarez-Rodríguez L, Ríos P, Laglera-Gándara CJ, Jurado A, Fernández-de-Córdova FJ, Gunnoe TB, Rodríguez A. Cleavage of Carbon Dioxide C=O Bond Promoted by Nickel-Boron Cooperativity in a PBP-Ni Complex. Angew Chem Int Ed Engl 2023; 62:e202306315. [PMID: 37399341 DOI: 10.1002/anie.202306315] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/05/2023]
Abstract
The synthesis and characterization of (tBu PBP)Ni(OAc) (5) by insertion of carbon dioxide into the Ni-C bond of (tBu PBP)NiMe (1) is presented. An unexpected CO2 cleavage process involving the formation of new B-O and Ni-CO bonds leads to the generation of a butterfly-structured tetra-nickel cluster (tBu PBOP)2 Ni4 (μ-CO)2 (6). Mechanistic investigation of this reaction indicates a reductive scission of CO2 by O-atom transfer to the boron atom via a cooperative nickel-boron mechanism. The CO2 activation reaction produces a three-coordinate (tBu P2 BO)Ni-acyl intermediate (A) that leads to a (tBu P2 BO)-NiI complex (B) via a likely radical pathway. The NiI species is trapped by treatment with the radical trap (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) to give (tBu P2 BO)NiII (η2 -TEMPO) (7). Additionally, 13 C and 1 H NMR spectroscopy analysis using 13 C-enriched CO2 provides information about the species involved in the CO2 activation process.
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Affiliation(s)
- Lucía Álvarez-Rodríguez
- Instituto de Investigaciones Químicas-Departamento de Química Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - Pablo Ríos
- Instituto de Investigaciones Químicas-Departamento de Química Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - Carlos J Laglera-Gándara
- Instituto de Investigaciones Químicas-Departamento de Química Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - Andrea Jurado
- Instituto de Investigaciones Químicas-Departamento de Química Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - Francisco José Fernández-de-Córdova
- Instituto de Investigaciones Químicas-Departamento de Química Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - T Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904, USA
| | - Amor Rodríguez
- Instituto de Investigaciones Químicas-Departamento de Química Inorgánica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
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4
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Fang F, Kang JX, Xu CQ, Chang J, Zhang J, Li S, Chen X. Which Type of Pincer Complex Is Thermodynamically More Stable? Understanding the Structures and Relative Bond Strengths of Group 10 Metal Complexes Supported by Benzene-Based PYCYP Pincer Ligands. Inorg Chem 2021; 60:18924-18937. [PMID: 34878759 DOI: 10.1021/acs.inorgchem.1c02722] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The influence of the pincer platform composition and substitution on the reactivity and physical properties of pincer complexes can be easily explored through different experimental techniques. However, the influence of these factors on the molecular structures and thermodynamic stability of pincer complexes is usually very subtle and cannot always be unambiguously established. To rationalize this subtle influence, a survey of crystallographic data from 130 group 10 metal pincer complexes supported by benzene-based PYCYP pincer ligands, [2,6-(R2PY)2C6H3-nR'n]MX (Y = CH2, NH, O, S; M = Ni, Pd, Pt; R = tBu, iPr, Ph, Cy, Me; R' = CO2Me, tBu, CF3, Ac; n = 0-2; X = F, Cl, Br, I, H, SH, SPh, SBn, Ph, Me, N3, NCS), was carried out. Theoretical calculations for some selected complexes were performed to evaluate the relative bond strength. It was found that the M-Cipso bond length decreases following the linker series of CH2 > NH > O and that the relative M-Cipso bond strength increases following the linker series of CH2 < NH < O. In most cases, the M-P bond length decreases following the linker series of NH > CH2 > O. The relative M-P bond strength increases following the linker series of CH2 < NH < O. A comparison of the thermochemical balance for the isodesmic displacement of the side-arm interactions with PH3 as a probe ligand indicated that the Ni-P bond in a PCCCP-type pincer complex is far less difficult to break compared with that in a POCOP-type complex. As a result, with the same donor substituents and the same auxiliary ligand, the POCOP-type pincer complexes are thermodynamically more stable than the PCCCP complexes. The influence of other backbone and donor substitutions as well as the pincer platform composition on the M-Cipso, M-P, and M-X bond lengths, relative bond strengths, and P-M-P bite angles was also discussed.
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Affiliation(s)
- Fei Fang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jia-Xin Kang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Cong-Qiao Xu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jiarui Chang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jie Zhang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Shujun Li
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuenian Chen
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.,College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
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5
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Cramer RE, Rimsza JM, Boyle TJ. Structural and computational examination of hydrogen-bonding between the C-H bonds of phenylphosphates and nitrate ions. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Abstract
AbstractNickel-catalyzed cross-coupling and photoredox catalytic reactions has found widespread utilities in organic synthesis. Redox processes are key intermediate steps in many catalytic cycles. As a result, it is pertinent to measure and document the redox potentials of various nickel species as precatalysts, catalysts, and intermediates. The redox potentials of a transition-metal complex are governed by its oxidation state, ligand, and the solvent environment. This article tabulates experimentally measured redox potentials of nickel complexes supported on common ligands under various conditions. This review article serves as a versatile tool to help synthetic organic and organometallic chemists evaluate the feasibility and kinetics of redox events occurring at the nickel center, when designing catalytic reactions and preparing nickel complexes.1 Introduction1.1 Scope1.2 Measurement of Formal Redox Potentials1.3 Redox Potentials in Nonaqueous Solution2 Redox Potentials of Nickel Complexes2.1 Redox Potentials of (Phosphine)Ni Complexes2.2 Redox Potentials of (Nitrogen)Ni Complexes2.3 Redox Potentials of (NHC)Ni Complexes
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7
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Jagtap RA, Ankade SB, Gonnade RG, Punji B. Achiral and chiral NNN-pincer nickel complexes with oxazolinyl backbones: application in transfer hydrogenation of ketones. NEW J CHEM 2021. [DOI: 10.1039/d1nj01698a] [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
NNN-based achiral and chiral (oxazolinyl)amido-pincer nickel complexes are developed and employed for the catalytic transfer hydrogenation of ketones.
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Affiliation(s)
- Rahul A. Jagtap
- Organometallic Synthesis and Catalysis Lab
- Chemical Engineering Division
- CSIR–National Chemical Laboratory (CSIR–NCL)
- Dr Homi Bhabha Road
- Pune – 411 008
| | - Shidheshwar B. Ankade
- Organometallic Synthesis and Catalysis Lab
- Chemical Engineering Division
- CSIR–National Chemical Laboratory (CSIR–NCL)
- Dr Homi Bhabha Road
- Pune – 411 008
| | - Rajesh G. Gonnade
- Centre for Material Characterization
- CSIR–National Chemical Laboratory
- Pune – 411 008
- India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Lab
- Chemical Engineering Division
- CSIR–National Chemical Laboratory (CSIR–NCL)
- Dr Homi Bhabha Road
- Pune – 411 008
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8
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Castillo-García AA, González-Sebastián L, Lomas-Romero L, Hernandez-Ortega S, Toscano RA, Morales-Morales D. Novel meta-benzothiazole and benzimidazole functionalised POCOP-Ni( ii) pincer complexes as efficient catalysts in the production of diarylketones. NEW J CHEM 2021. [DOI: 10.1039/d1nj01348c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Novel meta-benzothiazole and benzimidazole functionalised POCOP-Ni(ii) pincer complexes were synthesized and used as effcient catalysts for the production of diarylketones.
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Affiliation(s)
- Antonio A. Castillo-García
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | | | - Leticia Lomas-Romero
- Departamento de Química
- Universidad Autónoma Metropolitana-Iztapalapa
- Ciudad de México
- Mexico
| | - Simon Hernandez-Ortega
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | - Ruben A. Toscano
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | - David Morales-Morales
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
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9
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Swisher NA, Grubbs RH. Synthesis and Characterization of 3,5-Bis(di- tert-butylphosphinito)pyridine Pincer Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicholas A. Swisher
- Arnold and Mabel Beckman Laboratory for Chemical Synthesis, California Institute of Technology, Pasadena, California 91125, United States
| | - Robert H. Grubbs
- Arnold and Mabel Beckman Laboratory for Chemical Synthesis, California Institute of Technology, Pasadena, California 91125, United States
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10
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Fang F, Chang J, Kang J, Zhang J, Li S, Chen X. A Structure Comparison of Ni(II) Complexes Supported by PNCNP and POCOP Pincer Ligands. ChemistrySelect 2020. [DOI: 10.1002/slct.202001413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fei Fang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy MaterialsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationCollaborative Innovation Centre of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 China
| | - Jiarui Chang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy MaterialsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationCollaborative Innovation Centre of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 China
| | - Jiaxin Kang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy MaterialsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationCollaborative Innovation Centre of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 China
| | - Jie Zhang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy MaterialsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationCollaborative Innovation Centre of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 China
| | - Shujun Li
- Henan Key Laboratory of Boron Chemistry and Advanced Energy MaterialsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationCollaborative Innovation Centre of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 China
| | - Xuenian Chen
- Henan Key Laboratory of Boron Chemistry and Advanced Energy MaterialsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationCollaborative Innovation Centre of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal University Xinxiang Henan 453007 China
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou Henan 450001 China)
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11
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Kim J, Kim YE, Park K, Lee Y. A Silyl-Nickel Moiety as a Metal–Ligand Cooperative Site. Inorg Chem 2019; 58:11534-11545. [DOI: 10.1021/acs.inorgchem.9b01388] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Yeong-Eun Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Koeun Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Yunho Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
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12
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Huang M, Gonçalves TP, Huang K. Beyond the PN
3
(P) system: Synthesis of non‐symmetrical PONNP‐pincer ligands and a unique Ni–Ag bimetallic complex containing a short Ag–Ag distance. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mei‐Hui Huang
- KAUST Catalysis Center and Division of Physical Sciences and EngineeringKing Abdullah University of Science and Technology Thuwal Saudi Arabia
| | - Théo P. Gonçalves
- KAUST Catalysis Center and Division of Physical Sciences and EngineeringKing Abdullah University of Science and Technology Thuwal Saudi Arabia
| | - Kuo‐Wei Huang
- KAUST Catalysis Center and Division of Physical Sciences and EngineeringKing Abdullah University of Science and Technology Thuwal Saudi Arabia
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13
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Zhang J, Cao B, Ding Y, Chang J, Li S, Chen X. Syntheses and Structures of Group 10 Metal POCOP Pincer Complexes Bearing A Mercapto-o-
carborane Auxiliary Ligand. ChemistrySelect 2019. [DOI: 10.1002/slct.201803908] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jie Zhang
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; Henan Normal University Xinxiang; Henan 453007 China
| | - Bula Cao
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; Henan Normal University Xinxiang; Henan 453007 China
| | - Yazhou Ding
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; Henan Normal University Xinxiang; Henan 453007 China
| | - Jiarui Chang
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; Henan Normal University Xinxiang; Henan 453007 China
| | - Shujun Li
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; Henan Normal University Xinxiang; Henan 453007 China
| | - Xuenian Chen
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials; Henan Normal University Xinxiang; Henan 453007 China
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14
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Zhang J, Liu T, Wei C, Chang J, Ma QQ, Li S, Ma N, Chen X. The Reactivity of Mercapto Groups against Boron Hydrides in Pincer Ligated Nickel Mercapto Complexes. Chem Asian J 2018; 13:3231-3238. [PMID: 30129168 DOI: 10.1002/asia.201801050] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/17/2018] [Indexed: 01/24/2023]
Abstract
Several pincer ligated nickel mercapto complexes, [2,6-(R2 PCH2 )2 C6 H3 ]NiSH (R=tBu, 1 a; iPr, 1 b), [2,6-(R2 PO)2 C6 H3 ]NiSH (R=tBu, 2 a; iPr, 2 b) and [4-MeOCO-2,6-(tBu2 PO)2 C6 H2 ]NiSH (3 a), were synthesized and fully characterized. The reactivity of the mercapto groups against boron hydrides and organic bases was investigated. It was found that the mercapto groups are difficult to be deprotonated by boron hydrides or organic bases. The treatment of complex 2 a or 2 b with an excess amount of catecholborane (HBcat) afforded the corresponding pincer ligated nickel borohydride complexes and the HBcat degradation product. The treatment of complex 1 a, 2 a or 2 b with an excess amount of BH3 ⋅THF produced the corresponding nickel borohydride species and the S-bridged triborane species THF⋅BH2 -μ2 -S(B2 H5 ) (5). No reactions between these complexes and organic bases were observed. DFT calculations were carried out to understand this reactivity and get mechanistic insights into the reactions.
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Affiliation(s)
- Jie Zhang
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Ting Liu
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Changgeng Wei
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Jiarui Chang
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Qiang-Qiang Ma
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Shujun Li
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Nana Ma
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Xuenian Chen
- School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang, Henan, 453007, China
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15
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Application of POCOP Pincer Nickel Complexes to the Catalytic Hydroboration of Carbon Dioxide. Catalysts 2018. [DOI: 10.3390/catal8110508] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The reduction of CO2 is of great importance. In this paper, different types of bis(phosphinite) (POCOP) pincer nickel complexes, [2,6-(R2PO)2C6H3]NiX (R = tBu, iPr, Ph; X = SH, N3, NCS), were applied to the catalytic hydroboration of CO2 with catecholborane (HBcat). It was found that pincer complexes with tBu2P or iPr2P phosphine arms are active catalysts for this reaction in which CO2 was successfully reduced to a methanol derivative (CH3OBcat) with a maximum turnover frequency of 1908 h−1 at room temperature under an atmospheric pressure of CO2. However, complexes with phenyl-substituted phosphine arms failed to catalyze this reaction—the catalysts decomposed under the catalytic conditions. Complexes with iPr2P phosphine arms are more active catalysts compared with the corresponding complexes with tBu2P phosphine arms. For complexes with the same phosphine arms, the catalytic activity follows the series of mercapto complex (X = SH) ≈ azido complex (X = N3) >> isothiocyanato complex (X = NCS). It is believed that all of these catalytic active complexes are catalyst precursors which generate the nickel hydride complex [2,6-(R2PO)2C6H3]NiH in situ, and the nickel hydride complex is the active species to catalyze this reaction.
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Affiliation(s)
- Nadeesha P. N. Wellala
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Hai T. Dong
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Jeanette A. Krause
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Hairong Guan
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
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Li Y, Krause JA, Guan H. Cobalt POCOP Pincer Complexes via Ligand C–H Bond Activation with Co2(CO)8: Catalytic Activity for Hydrosilylation of Aldehydes in an Open vs a Closed System. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00273] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yingze Li
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Jeanette A. Krause
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Hairong Guan
- Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
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Gafurov ZN, Kagilev AA, Kantyukov AO, Balabaev AA, Sinyashin OG, Yakhvarov DG. Classification and synthesis of nickel pincer complexes. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2086-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Wellala NN, Luebking JD, Krause JA, Guan H. Roles of Hydrogen Bonding in Proton Transfer to κ P,κ N,κ P-N(CH 2CH 2P i Pr 2) 2-Ligated Nickel Pincer Complexes. ACS OMEGA 2018; 3:4986-5001. [PMID: 30023906 PMCID: PMC6045406 DOI: 10.1021/acsomega.8b00777] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
The nickel PNP pincer complex ( i PrPNP)NiPh ( i PrPNP = κP,κN,κP-N(CH2CH2P i Pr2)2) was prepared by reacting ( i PrPNP)NiBr with PhMgCl or deprotonating [( i PrPNHP)NiPh]Y ( i PrPNHP = κP,κN,κP-HN(CH2CH2P i Pr2)2; Y = Br, PF6) with KO t Bu. The byproducts of the PhMgCl reaction were identified as [( i PrPNHP)NiPh]Br and ( i PrPNP')NiPh ( i PrPNP' = κP,κN,κP-N(CH=CHP i Pr2)(CH2CH2P i Pr2)). The methyl analog ( i PrPNP)NiMe was synthesized from the reaction of ( i PrPNP)NiBr with MeLi, although it was contaminated with ( i PrPNP')NiMe due to ligand oxidation. Protonation of ( i PrPNP)NiX (X = Br, Ph, Me) with various acids, such as HCl, water, and MeOH, was studied in C6D6. Nitrogen protonation was shown to be the most favorable process, producing a cationic species [( i PrPNHP)NiX]+ with the NH moiety hydrogen-bonded to the conjugate base (i.e., Cl-, HO-, or MeO-). Protonation of the Ni-C bond was observed at room temperature with ( i PrPNP)NiMe, whereas at 70 °C with ( i PrPNP)NiPh, both resulting in [( i PrPNHP)NiCl]Cl as the final product. Protonation of ( i PrPNP)NiBr was complicated by site exchange between Br- and the conjugate base and by the degradation of the pincer complexes. Indene, which lacks hydrogen-bonding capability, was unable to protonate ( i PrPNP)NiPh and ( i PrPNP)NiMe, despite being more acidic than water and MeOH. Neutral and cationic nickel pincer complexes involved in this study, including ( i PrPNP')NiBr, ( i PrPNP)NiPh, ( i PrPNP')NiPh, ( i PrPNP)NiMe, [( i PrPNHP)NiPh]Y (Y = Br, PF6, BPh4), [( i PrPNHP)NiPh]2[NiCl4], [( i PrPNHP)NiMe]Y (Y = Cl, Br, BPh4), [( i PrPNHP)NiBr]Br, and [( i PrPNHP)NiCl]Cl, were characterized by X-ray crystallography.
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21
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How does the carbon hybridization impact the rate of metal-carbon bond cleavage by an alkyne? A case study with POCOP-pincer ligated palladium hydrocarbyl complexes. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Joksch M, Haak J, Spannenberg A, Beweries T. Synthesis, Characterisation and Hydrogen Bonding of Isostructural Group 10 Metal Halido Complexes Bearing a POCOP Ligand. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700680] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Markus Joksch
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Julia Haak
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Torsten Beweries
- Leibniz-Institut für Katalyse an der Universität Rostock e.V.; Albert-Einstein-Strasse 29a 18059 Rostock Germany
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23
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Kim J, Park K, Lee Y. Synthesis and characterization of a four-coordinate nickel carbamato species (MeSiP i Pr 2 )Ni(OC(O)NHMes) generated from the reaction of (MeSiP i Pr 2 )Ni(NHMes) with CO 2. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.08.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhou W, Zheng S, Schultz JW, Rath NP, Mirica LM. Aromatic Cyanoalkylation through Double C–H Activation Mediated by Ni(III). J Am Chem Soc 2016; 138:5777-80. [DOI: 10.1021/jacs.6b02405] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wen Zhou
- Department
of Chemistry, Washington University, St. Louis, Missouri 63130-4899, United States
| | - Shuai Zheng
- Department
of Chemistry, Washington University, St. Louis, Missouri 63130-4899, United States
| | - Jason W. Schultz
- Department
of Chemistry, Washington University, St. Louis, Missouri 63130-4899, United States
| | - Nigam P. Rath
- Department
of Chemistry and Biochemistry, University of Missouri—St. Louis, St.
Louis, Missouri 63121-4400, United States
| | - Liviu M. Mirica
- Department
of Chemistry, Washington University, St. Louis, Missouri 63130-4899, United States
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25
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García-Eleno MA, Quezada-Miriel M, Reyes-Martínez R, Hernández-Ortega S, Morales-Morales D. A comparative study of the packing of two polymorphs of the nickel(II) pincer complex [2,6-bis(di-tert-butylphosphinoyl)-4-(3,5-dinitrobenzoyloxy)phenyl-κ3P,C1,P′]chloridonickel(II). ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2016; 72:393-7. [DOI: 10.1107/s2053229616005143] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 03/25/2016] [Indexed: 11/10/2022]
Abstract
Pincer complexes can act as catalysts in organic transformations and have potential applications in materials, medicine and biology. They exhibit robust structures and high thermal stability attributed to the tridentate coordination of the pincer ligands and the strong σ metal–carbon bond. Nickel derivatives of these ligands have shown high catalytic activities in cross-coupling reactions and other industrially relevant transformations. This work reports the crystal structures of two polymorphs of the title NiIIPOCOP pincer complex, [Ni(C29H41N2O8P2)Cl] or [NiCl{C6H2-4-[OCOC6H4-3,5-(NO2)2]-2,6-(OPtBu2)2}]. Both pincer structures exhibit the NiIIatom in a distorted square-planar coordination geometry with the POCOP pincer ligand coordinated in a typical tridentate mannerviathe two P atoms and one arene C atomviaa C—Ni σ bond, giving rise to two five-membered chelate rings. The coordination sphere of the NiIIcentre is completed by a chloride ligand. The asymmetric units of both polymorphs consist of one molecule of the pincer complex. In the first polymorph, the arene rings are nearly coplanar, with a dihedral angle between the mean planes of 27.9 (1)°, while in the second polymorph, this angle is 82.64 (1)°, which shows that the arene rings are almost perpendicular to one another. The supramolecular structure is directed by the presence of weak C—H...O=X(X= C or N) interactions, forming two- and three-dimensional chain arrangements.
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Khake SM, Jagtap RA, Dangat YB, Gonnade RG, Vanka K, Punji B. Mechanistic Insights into Pincer-Ligated Palladium-Catalyzed Arylation of Azoles with Aryl Iodides: Evidence of a PdII–PdIV–PdII Pathway. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shrikant M. Khake
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Rahul A. Jagtap
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Yuvraj B. Dangat
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Rajesh G. Gonnade
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Kumar Vanka
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
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Li H, Meng W, Adhikary A, Li S, Ma N, Zhao Q, Yang Q, Eberhardt NA, Leahy KM, Krause JA, Zhang J, Chen X, Guan H. Metathesis reactivity of bis(phosphinite) pincer ligated nickel chloride, isothiocyanate and azide complexes. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.12.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Murugesan S, Kirchner K. Non-precious metal complexes with an anionic PCP pincer architecture. Dalton Trans 2016; 45:416-39. [PMID: 26608262 DOI: 10.1039/c5dt03778f] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This perspective article provides an overview of the advancements in the field of non-precious metal complexes featuring anionic PCP pincer ligands with the inclusion of aliphatic systems. It covers research from the beginning in 1976 until late 2015 and provides a summary of key developments in this area, which is, to date, limited to the metals nickel, cobalt, iron, and molybdenum. While the research in nickel PCP complexes is already quite extensive, the chemistry of cobalt, iron, and molybdenum PCP complexes is comparatively sparse. With other non-precious metals such as copper, manganese, chromium or vanadium no PCP complexes are known as yet. In the case of nickel PCP complexes already many catalytic applications such as Suzuki-Miyaura coupling, C-S cross coupling, Kharasch and Michael additions, hydrosilylation of aldehydes and ketones, cyanomethylation of aldehydes, and hydroamination of nitriles were reported. While iron PCP complexes were found to be active catalysts for the hydrosilylation of aldehydes and ketones as well as the dehydrogenation of ammonia-borane, cobalt PCP complexes were not applied to any catalytic reactions. Surprisingly, only one molybdenum PCP complex is reported, which was capable of cleaving dinitrogen to give a nitride complex. This perspective underlines that the combination of cheap and abundant metals such as nickel, cobalt, and iron with PCP pincer ligands may result in the development of novel, versatile, and efficient catalysts for atom-efficient catalytic reactions.
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Affiliation(s)
- Sathiyamoorthy Murugesan
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria.
| | - Karl Kirchner
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria.
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Jiang S, Quintero-Duque S, Roisnel T, Dorcet V, Grellier M, Sabo-Etienne S, Darcel C, Sortais JB. Direct synthesis of dicarbonyl PCP-iron hydride complexes and catalytic dehydrogenative borylation of styrene. Dalton Trans 2016; 45:11101-8. [DOI: 10.1039/c6dt01149g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method based on the simple metalating reagent Fe(CO)5 leads to the synthesis of cyclometalled PCP iron carbonyl pincer complexes which are active catalytic precursors for the selective dehydrogenative borylation of styrene.
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Affiliation(s)
- Shi Jiang
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- Team Organometallics: Materials and Catalysis
- Centre for Catalysis and Green Chemistry
- 35042 Rennes Cedex
| | - Samuel Quintero-Duque
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- Team Organometallics: Materials and Catalysis
- Centre for Catalysis and Green Chemistry
- 35042 Rennes Cedex
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- Centre de Diffractométrie X
- 35042 Rennes Cedex
- France
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- Centre de Diffractométrie X
- 35042 Rennes Cedex
- France
| | - Mary Grellier
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse Cedex 4
- France
- Université de Toulouse
| | - Sylviane Sabo-Etienne
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse Cedex 4
- France
- Université de Toulouse
| | - Christophe Darcel
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- Team Organometallics: Materials and Catalysis
- Centre for Catalysis and Green Chemistry
- 35042 Rennes Cedex
| | - Jean-Baptiste Sortais
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- Team Organometallics: Materials and Catalysis
- Centre for Catalysis and Green Chemistry
- 35042 Rennes Cedex
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Hao J, Vabre B, Zargarian D. Reactions of Phenylhydrosilanes with Pincer–Nickel Complexes: Evidence for New Si–O and Si–C Bond Formation Pathways. J Am Chem Soc 2015; 137:15287-98. [PMID: 26562478 DOI: 10.1021/jacs.5b10066] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jingjun Hao
- Département
de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Boris Vabre
- Département
de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Davit Zargarian
- Département
de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
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31
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Vabre B, Canac Y, Lepetit C, Duhayon C, Chauvin R, Zargarian D. Charge Effects in PCP Pincer Complexes of NiIIbearing Phosphinite and Imidazol(i)ophosphine Coordinating Jaws: From Synthesis to Catalysis through Bonding Analysis. Chemistry 2015; 21:17403-14. [DOI: 10.1002/chem.201502491] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Indexed: 11/11/2022]
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Lapointe S, Vabre B, Zargarian D. POCOP-Type Pincer Complexes of Nickel: Synthesis, Characterization, and Ligand Exchange Reactivities of New Cationic Acetonitrile Adducts. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00272] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sébastien Lapointe
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | - Boris Vabre
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | - Davit Zargarian
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
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Curado N, Maya C, López-Serrano J, Rodríguez A. Boryl-assisted hydrogenolysis of a nickel-methyl bond. Chem Commun (Camb) 2015; 50:15718-21. [PMID: 25364792 DOI: 10.1039/c4cc07616h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A stable nickel(II) methyl complex containing a diphosphino-boryl (PBP) pincer ligand is described. Mechanistic studies on the hydrogenolysis of the Ni-Me bond suggest a metal ligand cooperation mechanism that involves the intermediacy of a σ-B-H Ni(0) species that further undergoes B-H oxidative addition to form a Ni(II) hydride complex.
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Affiliation(s)
- Natalia Curado
- Instituto de Investigaciones Químicas-Departamento de Química Inorgánica, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Avenida Américo Vespucio 49, 41092 Sevilla, Spain.
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Asay M, Morales-Morales D. Recent Advances on the Chemistry of POCOP–Nickel Pincer Compounds. TOP ORGANOMETAL CHEM 2015. [DOI: 10.1007/3418_2015_135] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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36
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Salah A, Corpet M, ul-Hassan Khan N, Zargarian D, Spasyuk DM. Synthesis of unsymmetrical 5,6-POCOP′-type pincer complexes of nickel(ii): impact of nickelacycle size on structures and spectroscopic properties. NEW J CHEM 2015. [DOI: 10.1039/c5nj00807g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different structures and reactivities observed with the unsymmetrical (5,6-POCOP) and symmetrical (5,5-POCOP) pincer complexes of Ni(ii) underline the importance of the metallacycle ring size and its degree of flexibility.
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Affiliation(s)
- Abderrahmen Salah
- Département de chimie
- Université de Montréal
- Montréal (Québec)
- Canada H3C 3J7
| | - Martin Corpet
- Département de chimie
- Université de Montréal
- Montréal (Québec)
- Canada H3C 3J7
| | | | - Davit Zargarian
- Département de chimie
- Université de Montréal
- Montréal (Québec)
- Canada H3C 3J7
| | - Denis M. Spasyuk
- Département de chimie
- Université de Montréal
- Montréal (Québec)
- Canada H3C 3J7
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37
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Wilson GLO, Abraha M, Krause JA, Guan H. Reactions of phenylacetylene with nickel POCOP-pincer hydride complexes resulting in different outcomes from their palladium analogues. Dalton Trans 2015; 44:12128-36. [DOI: 10.1039/c5dt00161g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nickel POCOP-pincer hydride complexes react with phenylacetylene to afford alkenyl complexes whereas the palladium analogues give alkynyl complexes.
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Affiliation(s)
| | - Medhanei Abraha
- Department of Chemistry
- University of Cincinnati
- Cincinnati
- USA
| | | | - Hairong Guan
- Department of Chemistry
- University of Cincinnati
- Cincinnati
- USA
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38
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Cloutier JP, Vabre B, Moungang-Soumé B, Zargarian D. Synthesis and Reactivities of New NCN-Type Pincer Complexes of Nickel. Organometallics 2014. [DOI: 10.1021/om5010176] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Boris Vabre
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | | | - Davit Zargarian
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
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39
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Hao J, Vabre B, Zargarian D. POCOP-Ligated Nickel Siloxide Complexes: Syntheses, Characterization, and Reactivities. Organometallics 2014. [DOI: 10.1021/om500916d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jingjun Hao
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | - Boris Vabre
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | - Davit Zargarian
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
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40
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Vabre B, Deschamps F, Zargarian D. Ortho Derivatization of Phenols through C–H Nickelation: Synthesis, Characterization, and Reactivities of Ortho-Nickelated Phosphinite Complexes. Organometallics 2014. [DOI: 10.1021/om500938u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Boris Vabre
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | - Félix Deschamps
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | - Davit Zargarian
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
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Mougang-Soumé B, Belanger-Gariépy F, Zargarian D. Synthesis, Characterization, and Oxidation of New POCNimine-Type Pincer Complexes of Nickel. Organometallics 2014. [DOI: 10.1021/om500529e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | | | - Davit Zargarian
- Department of Chemistry, Université de Montréal, Montreal, Quebec, Canada
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Hao J, Vabre B, Mougang-Soumé B, Zargarian D. Small molecule activation by POC(sp3)OP-nickel complexes. Chemistry 2014; 20:12544-52. [PMID: 25145857 DOI: 10.1002/chem.201402933] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Indexed: 12/13/2022]
Abstract
This contribution describes the reactivities of CO2 , CO, O2 , and ArNC with the pincer-type complexes [(κ(P) ,κ(C) ,κ(P') -POC sp 3OP)NiX] (POC sp 3OP=(R2 POCH2 )2 CH; R=iPr; X=OSiMe3 , NArH; Ar=2,6-iPr2 C6 H3 ). Reaction of the amido derivative with CO2 and CO leads to a simple insertion into the NiN bond to give stable carbamate and carbamoyl derivatives, respectively, the pincer ligand backbone remaining intact in both cases. In contrast, the analogous reactions with the siloxide derivative produced kinetically labile insertion products that either revert to the starting material (in the case of CO2 ) or react further to give the mixed-valent, dinickel species [(POC sp 3OP)Ni(II) {μ,κ(O) ,κ(P) ,κ(P') -OCOCH(CH2 CH2 OPR2 )2 }Ni(0) (CO)2 ]. The zero-valent center in the latter compound is ligated by a new ligand arising from transformation of the POC sp 3OP ligand backbone. The carbonylation and carboxylation of the siloxido derivative also produced minor quantities of a side-product identified as the trinickel species, [{(η(3) -allyl)Ni(μ(O) ,κ(P) -R2 PO)2 }2 Ni], arising from total dismantling of the POC sp 3OP ligand. Similar reactivities were observed with isonitrile, ArNC: reaction with the siloxido derivative resulted in a complex sequence of steps involving initial insertion, a 1,3-hydrogen shift, and an Arbuzov rearrangement to give [Ni(CNAr)4 ] and a methacrylamide based on fragments of the POC sp 3OP ligand. Oxygenation of the amido and siloxido derivatives led to the phosphinate derivative, [(POC sp 3OP)Ni(OP(O)R2 )], arising from oxidative transformation of the original ligand frame; the reaction with the Ni-NHAr derivative also gave ArHNP(O)R2 through a complex NP bond-forming reaction.
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Affiliation(s)
- Jingjun Hao
- Département de chimie, Université de Montréal, 2900 Boul. Edouard-Montpetit, Montréal, Québec, H3C 3 J7 (Canada)
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Vabre B, Petiot P, Declercq R, Zargarian D. Fluoro and Trifluoromethyl Derivatives of POCOP-Type Pincer Complexes of Nickel: Preparation and Reactivities in SN2 Fluorination and Direct Benzylation of Unactivated Arenes. Organometallics 2014. [DOI: 10.1021/om500472b] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Boris Vabre
- Department
of Chemistry, Université de Montréal, Montréal, Québec H3T 1J4, Canada
| | - Pauline Petiot
- Department
of Chemistry, Université de Montréal, Montréal, Québec H3T 1J4, Canada
| | - Richard Declercq
- Department
of Chemistry, Université de Montréal, Montréal, Québec H3T 1J4, Canada
| | - Davit Zargarian
- Department
of Chemistry, Université de Montréal, Montréal, Québec H3T 1J4, Canada
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Jonasson KJ, Wendt OF. Synthesis and characterization of a family of POCOP pincer complexes with nickel: reactivity towards CO2 and phenylacetylene. Chemistry 2014; 20:11894-902. [PMID: 25080339 DOI: 10.1002/chem.201403246] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Indexed: 11/08/2022]
Abstract
A cyclohexyl-based POC sp 3OP pincer ligand (POC sp 3OP=cis-1,3-bis(di-tert-butylphosphinito)cyclohexyl) cyclometalates with nickel to generate a series of new POC sp 3OP-supported Ni(II) complexes, including the halide, hydride, methyl, and phenyl species. trans-[NiCl{cis-1,3-bis(di-tert-butylphosphinito)cyclohexane}], [(POC sp 3OP)NiCl] (1 a) and the analogous bromide complex (1 b) were synthesized and fully characterized by NMR spectroscopy and X-ray crystallography. Cyclic voltammetry measurements of 1 a and 1 b alongside their bis(phosphine) analogues [(PC sp 3P)NiCl] (2 a) and [(PC sp 3P)NiCl] (2 a) (PC sp 3P=cis-1,3-bis(di-tert-butylphosphino)cyclohexyl) indicate a reduced electron density at the metal center upon introducing electron-withdrawing oxygen atoms in the pincer arms. The methyl [(POC sp 3OP)NiMe] (3) and phenyl [(POC sp 3OP)NiPh] (4) complexes were formed from 1 a by reaction with the corresponding organolithium reagents. 1 a also reacts with LiAlH4 to give the hydride complex [(POC sp 3OP)NiH] (5). The methyl complex 3 reacts with phenyl acetylene to give the acetylide complex [(POC sp 3OP)NiCCPh] (6). The reactivity of compounds 3-5 towards CO2 was studied. The hydride complex 5 and the methyl complex 3 both underwent CO2 insertion to form the formate species [(POC sp 3OP)NiOCOH] (7) and acetate species [(POC sp 3OP)NiOCOCH3 ] (8), respectively, although with a higher barrier of insertion in the latter case. Compound 4 was unreactive towards CO2 even at elevated temperatures. Complexes 3-8 were all characterized by NMR spectroscopy and X-ray crystallography.
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Affiliation(s)
- Klara J Jonasson
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund (Sweden)
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45
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Hao J, Mougang-Soumé B, Vabre B, Zargarian D. On the Stability of a POCsp3OP-Type Pincer Ligand in Nickel(II) Complexes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310386] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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46
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Hao J, Mougang-Soumé B, Vabre B, Zargarian D. On the Stability of a POCsp3OP-Type Pincer Ligand in Nickel(II) Complexes. Angew Chem Int Ed Engl 2014; 53:3218-22. [DOI: 10.1002/anie.201310386] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Indexed: 11/10/2022]
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Adhikary A, Schwartz JR, Meadows LM, Krause JA, Guan H. Interaction of alkynes with palladium POCOP-pincer hydride complexes and its unexpected relation to palladium-catalyzed hydrogenation of alkynes. Inorg Chem Front 2014. [DOI: 10.1039/c3qi00073g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Luca OR, Thompson BA, Takase MK, Crabtree RH. Synthesis and electrochemistry of a series of cyclopentadienyl Ni N-heterocyclic carbene compounds. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2012.10.038] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kumar P, Siddiqui MM, Reddi Y, Mague JT, Sunoj RB, Balakrishna MS. New bisphosphomide ligands, 1,3-phenylenebis((diphenylphosphino)methanone) and (2-bromo-1,3-phenylene)bis((diphenylphosphino)methanone): synthesis, coordination behavior, DFT calculations and catalytic studies. Dalton Trans 2013; 42:11385-99. [DOI: 10.1039/c3dt51046h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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