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Recent advances in the chemistry of group 9—Pincer organometallics. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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Zou XR, Liao SM, Huang KW, Liang LC. Chemistry of Anilido Phosphine Complexes of Nickel. CHEM LETT 2019. [DOI: 10.1246/cl.190216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xue-Ru Zou
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Shu-Mei Liao
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Lan-Chang Liang
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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Bottaro F, Madsen R. In Situ Generated Cobalt Catalyst for the Dehydrogenative Coupling of Alcohols and Amines into Imines. ChemCatChem 2019. [DOI: 10.1002/cctc.201900392] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Fabrizio Bottaro
- Department of ChemistryTechnical University of Denmark 2800 Kgs. Lyngby Denmark
| | - Robert Madsen
- Department of ChemistryTechnical University of Denmark 2800 Kgs. Lyngby Denmark
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Cruz TFC, Veiros LF, Gomes PT. Cobalt(I) Complexes of 5-Aryl-2-iminopyrrolyl Ligands: Synthesis, Spin Isomerism, and Application in Catalytic Hydroboration. Inorg Chem 2018; 57:14671-14685. [DOI: 10.1021/acs.inorgchem.8b02392] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tiago F. C. Cruz
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Luís F. Veiros
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Pedro T. Gomes
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
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Morris RH. Estimating the Wavenumber of Terminal Metal-Hydride Stretching Vibrations of Octahedral d6 Transition Metal Complexes. Inorg Chem 2018; 57:13809-13821. [DOI: 10.1021/acs.inorgchem.8b02314] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Robert H. Morris
- Department of Chemistry, University of Toronto, 80 Saint George St., Toronto, Ontario M5S3H6, Canada
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Sung S, Wang Q, Krämer T, Young RD. Synthesis and reactivity of a PC carbeneP cobalt(i) complex: the missing link in the cobalt PXP pincer series (X = B, C, N). Chem Sci 2018; 9:8234-8241. [PMID: 30542572 PMCID: PMC6240806 DOI: 10.1039/c8sc02782j] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 09/05/2018] [Indexed: 02/05/2023] Open
Abstract
We report the first example of a cobalt PCcarbeneP pincer complex (1) featuring a central alkylidene carbon donor accessed through the dehydration of an alcoholic POP proligand.
We report the first example of a cobalt PCcarbeneP pincer complex (1) featuring a central alkylidene carbon donor accessed through the dehydration of an alcoholic POP proligand. Complex 1 shares bonding similarities with cobalt PBP and PNP pincer complexes where the donor atom engages in π-bonding with the cobalt centre, and thus completes the PXP (X = B, C, N) pincer ligand series for cobalt (for X donors that partake in M–L π-bonding). As compared to PBP and PNP pincer complexes, which are known to be good hydride and proton acceptors (respectively), complex 1 is found to be an effective hydrogen atom acceptor. Complex 1 partakes in cooperative ligand reactivity, engaging in several small molecule activations with styrene, bromine, carbon disulphide, phenyl acetylene, acetonitrile, hydrogen, benzaldehyde and water (through microreversibility). The mechanism for the formation of complex 1 is studied through the isolation and computational analysis of key intermediates. The formation of 1 is found to avoid C–H activation of the proligand, and instead proceeds through a combination of O–H activation, hydrogen atom transfer, β-hydride elimination and hydrogen activation processes.
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Affiliation(s)
- Simon Sung
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 .
| | - Qingyang Wang
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 .
| | - Tobias Krämer
- Department of Chemistry , Maynooth University , Maynooth , Ireland
| | - Rowan D Young
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 .
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Das UK, Daifuku SL, Iannuzzi TE, Gorelsky SI, Korobkov I, Gabidullin B, Neidig ML, Baker RT. Iron(II) Complexes of a Hemilabile SNS Amido Ligand: Synthesis, Characterization, and Reactivity. Inorg Chem 2017; 56:13766-13776. [PMID: 29112382 DOI: 10.1021/acs.inorgchem.7b01802] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We report an easily prepared bis(thioether) amine ligand, SMeNHSMe, along with the synthesis, characterization, and reactivity of the paramagnetic iron(II) bis(amido) complex, [Fe(κ3-SMeNSMe)2] (1). Binding of the two different thioethers to Fe generates both five- and six-membered rings with Fe-S bonds in the five-membered rings (av 2.54 Å) being significantly shorter than those in the six-membered rings (av 2.71 Å), suggesting hemilability of the latter thioethers. Consistent with this hypothesis, magnetic circular dichroism (MCD) and computational (TD-DFT) studies indicate that 1 in solution contains a five-coordinate component [Fe(κ3-SMeNSMe)(κ2-SMeNSMe)] (2). This ligand hemilability was demonstrated further by reactivity studies of 1 with 2,2'-bipyridine, 1,2-bis(dimethylphosphino)ethane, and 2,6-dimethylphenyl isonitrile to afford iron(II) complexes [L2Fe(κ2-SMeNSMe)2] (3-5). Addition of a Brønsted acid, HNTf2, to 1 produces the paramagnetic, iron(II) amine-amido cation, [Fe(κ3-SMeNSMe)(κ3-SMeNHSMe)](NTf2) (6; Tf = SO2CF3). Cation 6 readily undergoes amine ligand substitution by triphos, affording the 16e- complex [Fe(κ2-SMeNSMe)(κ3-triphos)](NTf2) (7; triphos = bis(2-diphenylphosphinoethyl)phenylphosphine). These complexes are characterized by elemental analysis; 1H NMR, Mössbauer, IR, and UV-vis spectroscopy; and single-crystal X-ray diffraction. Preliminary results of amine-borane dehydrogenation catalysis show complex 7 to be a selective and particularly robust precatalyst.
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Affiliation(s)
- Uttam K Das
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Stephanie L Daifuku
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Theresa E Iannuzzi
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Serge I Gorelsky
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Bulat Gabidullin
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Michael L Neidig
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - R Tom Baker
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
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Reactions of iron(II) hydrides formed by selective C F/C H bond activation in fluoroaryl-imines. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sun J, Luo L, Luo Y, Deng L. An NHC-Silyl-NHC Pincer Ligand for the Oxidative Addition of C−H, N−H, and O−H Bonds to Cobalt(I) Complexes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jian Sun
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Lun Luo
- State Key Laboratory of Fine Chemicals; School of Chemical Engineering; Dalian University of Technology; Dalian 11602 P.R. China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals; School of Chemical Engineering; Dalian University of Technology; Dalian 11602 P.R. China
| | - Liang Deng
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
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An NHC-Silyl-NHC Pincer Ligand for the Oxidative Addition of C−H, N−H, and O−H Bonds to Cobalt(I) Complexes. Angew Chem Int Ed Engl 2017; 56:2720-2724. [DOI: 10.1002/anie.201611162] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 01/14/2017] [Indexed: 01/10/2023]
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Xiong Z, Li X, Zhang S, Shi Y, Sun H. Synthesis and Reactivity of N-Heterocyclic PSiP Pincer Iron and Cobalt Complexes and Catalytic Application of Cobalt Hydride in Kumada Coupling Reactions. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00937] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Zichang Xiong
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials,
Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Xiaoyan Li
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials,
Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Shumiao Zhang
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials,
Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Yaomin Shi
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials,
Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
| | - Hongjian Sun
- School of Chemistry and Chemical
Engineering, Key Laboratory of Special Functional Aggregated Materials,
Ministry of Education, Shandong University, Shanda Nanlu 27, 250199 Jinan, People’s Republic of China
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