1
|
Mena MR, Kim JH, So S, Ben-Daat H, Porter TM, Ghosh C, Sharma A, Flores M, Groy TL, Baik MH, Trovitch RJ. Comparing the Electronic Structure of Iron, Cobalt, and Nickel Compounds That Feature a Phosphine-Substituted Bis(imino)pyridine Chelate. Inorg Chem 2022; 61:6438-6450. [PMID: 35438990 DOI: 10.1021/acs.inorgchem.2c00008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
It was recently discovered that (Ph2PPrPDI)Mn (PDI = pyridine diimine) exists as a superposition of low-spin Mn(II) that is supported by a PDI dianion and intermediate-spin Mn(II) that is antiferromagnetically coupled to a triplet PDI dianion, a finding that encouraged the synthesis and electronic structure evaluation of late first row metal variants that feature the same chelate. The addition of Ph2PPrPDI to FeBr2 resulted in bromide dissociation and the formation of [(Ph2PPrPDI)FeBr][Br]. Reduction of this precursor using excess sodium amalgam afforded (Ph2PPrPDI)Fe, which possesses an Fe(II) center that is supported by a dianionic PDI ligand. Similarly, reduction of a premixed solution of Ph2PPrPDI and CoCl2 yielded the cobalt analog, (Ph2PPrPDI)Co. EPR spectroscopy and density functional theory calculations revealed that this compound features a high-spin Co(I) center that is antiferromagnetically coupled to a PDI radical anion. The addition of Ph2PPrPDI to Ni(COD)2 resulted in ligand displacement and the formation of (Ph2PPrPDI)Ni, which was found to possess a pendent phosphine group. Single-crystal X-ray diffraction, CASSCF calculations, and EPR spectroscopy indicate that (Ph2PPrPDI)Ni is best described as having a Ni(II)-PDI2- configuration. The electronic differences between these compounds are highlighted, and a computational analysis of Ph2PPrPDI denticity has revealed the thermodynamic penalties associated with phosphine dissociation from 5-coordinate (Ph2PPrPDI)Mn, (Ph2PPrPDI)Fe, and (Ph2PPrPDI)Co.
Collapse
Affiliation(s)
- Matthew R Mena
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Jun-Hyeong Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Sangho So
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Hagit Ben-Daat
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Tyler M Porter
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Chandrani Ghosh
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Anuja Sharma
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Marco Flores
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Thomas L Groy
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Ryan J Trovitch
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| |
Collapse
|
2
|
Synthesis, electronic structures, and reactivity of mononuclear and dinuclear low-valent molybdenum complexes in iminopyridine and bis(imino)pyridine ligand environments. J Inorg Biochem 2022; 230:111744. [DOI: 10.1016/j.jinorgbio.2022.111744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 01/18/2022] [Accepted: 01/22/2022] [Indexed: 11/22/2022]
|
3
|
Mondal R, Guin AK, Chakraborty G, Paul ND. Metal-ligand cooperative approaches in homogeneous catalysis using transition metal complex catalysts of redox noninnocent ligands. Org Biomol Chem 2022; 20:296-328. [PMID: 34904619 DOI: 10.1039/d1ob01153g] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Catalysis offers a straightforward route to prepare various value-added molecules starting from readily available raw materials. The catalytic reactions mostly involve multi-electron transformations. Hence, compared to the inexpensive and readily available 3d-metals, the 4d and 5d-transition metals get an extra advantage for performing multi-electron catalytic reactions as the heavier transition metals prefer two-electron redox events. However, for sustainable development, these expensive and scarce heavy metal-based catalysts need to be replaced by inexpensive, environmentally benign, and economically affordable 3d-metal catalysts. In this regard, a metal-ligand cooperative approach involving transition metal complexes of redox noninnocent ligands offers an attractive alternative. The synergistic participation of redox-active ligands during electron transfer events allows multi-electron transformations using 3d-metal catalysts and allows interesting chemical transformations using 4d and 5d-metals as well. Herein we summarize an up-to-date literature report on the metal-ligand cooperative approaches using transition metal complexes of redox noninnocent ligands as catalysts for a few selected types of catalytic reactions.
Collapse
Affiliation(s)
- Rakesh Mondal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur Botanic Garden, Howrah 711103, India.
| | - Amit Kumar Guin
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur Botanic Garden, Howrah 711103, India.
| | - Gargi Chakraborty
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur Botanic Garden, Howrah 711103, India.
| | - Nanda D Paul
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur Botanic Garden, Howrah 711103, India.
| |
Collapse
|
4
|
Fang W, Carpentier A, Sun X, Zhao Y, Maron L, Zhu C. Redox-induced reversible P-P coupling in a uranium complex. Chem Commun (Camb) 2021; 57:12175-12178. [PMID: 34726673 DOI: 10.1039/d1cc04765e] [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
A synthesized redox-active multidentate N-P ligand reacted with UCl4 in the presence of KHMDS or nBuLi, where two novel U(IV) complexes with or without P-P coupling were formed, respectively. The reversible P-P coupling in these complexes was observed in redox-induced reactions.
Collapse
Affiliation(s)
- Wei Fang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Ambre Carpentier
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France.
| | - Xiong Sun
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France.
| | - Congqing Zhu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| |
Collapse
|
5
|
Redox-active ligands: Recent advances towards their incorporation into coordination polymers and metal-organic frameworks. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213891] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
6
|
Müller I, Werncke CG. Reductive Coupling of (Fluoro)pyridines by Linear 3d-Metal(I) Silylamides of Cr-Co: A Tale of C-C Bond Formation, C-F Bond Cleavage and a Pyridyl Radical Anion. Chemistry 2021; 27:4932-4938. [PMID: 33453071 PMCID: PMC7986091 DOI: 10.1002/chem.202004852] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/21/2020] [Indexed: 01/10/2023]
Abstract
Herein, we disclose the facile reduction of pyridine (and its derivatives) by linear 3d-metal(I) silylamides (M=Cr-Co). This reaction resulted in intermolecular C-C coupling to give dinuclear metal(II) complexes bearing a bridging 4,4'-dihydrobipyridyl ligand. For iron, we demonstrated that the C-C coupling is reversible in solution, either directly or by reaction with substrates, via a presumed monomeric metal(II) complex bearing a pyridyl radical anion. In the course of this investigation, we also observed that the dinuclear metal(II) complex incorporating iron facilitated the isomerisation of 1,4-cyclohexadiene to 1,3-cyclohexadiene as well as equimolar amounts of benzene and cyclohexene. Furthermore, we synthesised and structurally characterised a non-3d-metal-bound pyridyl radical anion. The reactions of the silylamides with perfluoropyridine led to C-F bond cleavage with the formation of metal(II) fluoride complexes of manganese, iron and cobalt along with the homocoupling or reductive degradation of the substrate. In the case of cobalt, the use of lesser fluorinated pyridines led to C-F bond cleavage but no homocoupling. Overall, in this paper we provide insights into the multifaceted behaviour of simple (fluoro)pyridines in the presence of moderately to highly reducing metal complexes.
Collapse
Affiliation(s)
- Igor Müller
- Fachbereich Chemie/Department of ChemistryPhilipps-Universität MarburgHans-Meerwein-Strasse 435037MarburgGermany
| | - Christian Gunnar Werncke
- Fachbereich Chemie/Department of ChemistryPhilipps-Universität MarburgHans-Meerwein-Strasse 435037MarburgGermany
| |
Collapse
|
7
|
Nie W, Tarnopol DE, McCrory CCL. Enhancing a Molecular Electrocatalyst’s Activity for CO2 Reduction by Simultaneously Modulating Three Substituent Effects. J Am Chem Soc 2021; 143:3764-3778. [DOI: 10.1021/jacs.0c09357] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Weixuan Nie
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Drew E. Tarnopol
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Charles C. L. McCrory
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| |
Collapse
|
8
|
Hay MA, Boskovic C. Lanthanoid Complexes as Molecular Materials: The Redox Approach. Chemistry 2021; 27:3608-3637. [PMID: 32965741 DOI: 10.1002/chem.202003761] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 11/05/2022]
Abstract
The development of molecular materials with novel functionality offers promise for technological innovation. Switchable molecules that incorporate redox-active components are enticing candidate compounds due to their potential for electronic manipulation. Lanthanoid metals are most prevalent in their trivalent state and usually redox-activity in lanthanoid complexes is restricted to the ligand. The unique electronic and physical properties of lanthanoid ions have been exploited for various applications, including in magnetic and luminescent materials as well as in catalysis. Lanthanoid complexes are also promising for applications reliant on switchability, where the physical properties can be modulated by varying the oxidation state of a coordinated ligand. Lanthanoid-based redox activity is also possible, encompassing both divalent and tetravalent metal oxidation states. Thus, utilization of redox-active lanthanoid metals offers an attractive opportunity to further expand the capabilities of molecular materials. This review surveys both ligand and lanthanoid centered redox-activity in pre-existing molecular systems, including tuning of lanthanoid magnetic and photophysical properties by modulating the redox states of coordinated ligands. Ultimately the combination of redox-activity at both ligands and metal centers in the same molecule can afford novel electronic structures and physical properties, including multiconfigurational electronic states and valence tautomerism. Further targeted exploration of these features is clearly warranted, both to enhance understanding of the underlying fundamental chemistry, and for the generation of a potentially important new class of molecular material.
Collapse
Affiliation(s)
- Moya A Hay
- School of Chemistry, University of Melbourne, Victoria, 3010, Australia
| | - Colette Boskovic
- School of Chemistry, University of Melbourne, Victoria, 3010, Australia
| |
Collapse
|
9
|
Li Y, Fan W, Zhang Z, Xie X, Xiang S, Huang D. Copper(II)-hydroxide facilitated C-C bond formation: the carboxamido pyridine system versus the methylimino pyridine system. Dalton Trans 2020; 49:12189-12196. [PMID: 32930687 DOI: 10.1039/d0dt02288h] [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
A copper(ii)-hydroxide-induced carbon-carbon bond formation reaction is explored with the synthesis of an asymmetric carboxamido-methylimino pyridine Cu(i) complex of [CuI(py(N-C[double bond, length as m-dash]O)(N[double bond, length as m-dash]C-C)ph2Me2)2]- (12). Two imine-methyl groups are coupled to form a bridged C-C bond (N[double bond, length as m-dash]C-C-C-C[double bond, length as m-dash]N) at the methyl positions with the reduction of two Cu2+ center ions to Cu+. The reaction is checked with three dicarboxamido pyridine [CuII-OH] complexes, with which dinuclear Cu(i) complexes of [Cu2(py(N-C[double bond, length as m-dash]O)2ph2R2)2]2- (R = methyl (3), methyl and allyl (6)) and trinuclear [CuII-CuI-CuII] complex of [Cu3(⊂20-py(N-C[double bond, length as m-dash]O)2ph2dienMe3)2]+ (9) are obtained. The reactivities of the [CuII-L] (L = DMF, OH-) complexes in dicarboxamido pyridine, carboxamido-methylimino pyridine and dimethylimino pyridine systems are discussed in terms of the electron delocalization properties of ligands. A cooperative metal-ligand (Cu2+ and enamide ligand) interaction is proposed based on the characterization of ligated Cu(ii) intermediates with the techniques of X-ray crystallography, UV-vis spectroscopy, cyclic voltammogram, EPR spectroscopy, and DFT calculations.
Collapse
Affiliation(s)
- Yinghua Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
| | | | | | | | | | | |
Collapse
|
10
|
Nikolaevskaya E, Druzhkov N, Syroeshkin M, Egorov M. Chemistry of diazadiene type ligands with extra coordination groups. Prospects of reactivity. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213353] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
11
|
Nasibipour M, Safaei E, Masoumpour MS, Wojtczak A. Ancillary ligand electro-activity effects towards phenyl acetylene homocoupling reaction by a nickel(ii) complex of a non-innocent O-amino phenol ligand: a mechanistic insight. RSC Adv 2020; 10:24176-24189. [PMID: 35516191 PMCID: PMC9055111 DOI: 10.1039/d0ra04362a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 05/27/2020] [Indexed: 11/21/2022] Open
Abstract
A new Ni(ii) complex, was synthesized from the reaction of a non-innocent o-aminophenol ligand, and Ni(OAc)2. The crystal structure of NiIIL2NIS (in which, IS stands for iminosemiquinone radical ligand with cyanide (shown by N in NIS) substituent on phenolate rings) exhibits the square planar environment of Ni(ii). The complex has been crystalized in the monoclinic system and Ni(ii) was surrounded by two oxygen and two nitrogen atoms of two ligands. Variable-temperature magnetic susceptibility measurement for crystalline samples of complex shows the effective magnetic moment per molecule (μeff) of near zero and the diamagnetic nature of the complex (S = 0) which emphasize that strong antiferromagnetic coupling prevailed between the two unpaired electrons of LNIS ligands and Ni(ii) high spin electrons. The complex is EPR silent which confirms the diamagnetic character of the Ni(ii) complex. Electrochemical measurement (CV) indicates the redox-active character of ligand and metal. NiIIL2NIS complex proved to be effective for free metal- or base counterpart homocoupling of phenyl acetylene at room temperature. To the best of our knowledge, this is the first example of using Ni(ii) complex without using any reducing agent due to the promotion ancillary effect of non-innocent o-aminophenol ligand which acts as an “electron reservoir” and can reversibly accept and donate electrons in the catalytic cycle. The theoretical calculation confirms the magnetostructure, electronic spectrum and confirmed the suggested mechanism of phenyl acetylene homocoupling with emphasis on the role of non-innocent ligand electro-activity and the effect of ligand substituent on the efficiency and stability of the complex. A new Ni(ii) complex, was synthesized from the reaction of a non-innocent o-aminophenol ligand, and Ni(OAc)2.![]()
Collapse
Affiliation(s)
- Mina Nasibipour
- Department of Chemistry, College of Sciences, Shiraz University 71454 Shiraz Iran
| | - Elham Safaei
- Department of Chemistry, College of Sciences, Shiraz University 71454 Shiraz Iran
| | | | - Andrzej Wojtczak
- Nicolaus Copernicus University, Faculty of Chemistry 87-100 Torun Poland
| |
Collapse
|
12
|
Gray PA, Braun JD, Rahimi N, Herbert DE. Diiminepyridine‐Supported Phosphorus(I) and Phosphorus(III) Complexes: Synthesis, Characterization, and Electrochemistry. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Paul A. Gray
- Department of Chemistry and the Manitoba Institute for Materials University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg Manitoba Canada
| | - Jason D. Braun
- Department of Chemistry and the Manitoba Institute for Materials University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg Manitoba Canada
| | - Naser Rahimi
- Department of Chemistry and the Manitoba Institute for Materials University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg Manitoba Canada
| | - David E. Herbert
- Department of Chemistry and the Manitoba Institute for Materials University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg Manitoba Canada
| |
Collapse
|
13
|
Khatua M, Goswami B, Samanta S. Dehydrogenation of amines in aryl-amine functionalized pincer-like nitrogen-donor redox non-innocent ligands via ligand reduction on a Ni(ii) template. Dalton Trans 2020; 49:6816-6831. [PMID: 32374795 DOI: 10.1039/d0dt00466a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We have synthesized a series of new redox non-innocent azo aromatic pincer-like ligands: 2-(phenylazo)-6-(arylaminomethyl)pyridine (HLa-c: HLa = 2-(phenylazo)-6-(2,6-diisopropylphenylaminomethyl)pyridine, HLb = 2-(phenylazo)-6-(2,6-dimethylphenylaminomethyl)pyridine, and HLc = 2-(phenylazo)-6-(phenylaminomethyl)pyridine), in which one side arm is an arylaminomethyl moiety and the other arm is a 2-phenylazo moiety. Nickel(ii) complexes, 1-3, of these ligands HLa-c were synthesized in good yield (approximately 70%) by the reaction of ligands : (NiCl2·6H2O) in a 1 : 1 molar ratio in methanol. The amine donor in each of the ligands HLa-c binds to the Ni(ii) centre without deprotonation. In the solid state, complex 3 is a dimer; in solution it exists as monomer 3a. The reduction of acetonitrile solutions of each of the complexes 1, 2 and 3a, separately, with cobaltocene (1 equivalent), followed by exposure of the solution to air, resulted in the formation of new complexes 7, 8 and 9, respectively. Novel free ligands Lx and Ly have also been isolated, in addition to complexes 7 and 8, from the reaction of complexes 1 and 2, respectively. Complexes 7-9 and free ligands Lx and Ly have been formed via a dehydrogenation reaction of the arylaminomethyl side arm. The mechanism of the reaction was thoroughly investigated using a series of studies, including cyclic voltammetry, EPR, and UV-Vis spectral studies and density functional theory (DFT) calculations. The results of these studies suggest a mechanism initiated by ligand reduction followed by dioxygen activation. A Cl-/I- scrambling experiment revealed that the dissociation of the chloride ligand(s) was associated with the one-electron reduction of the ligand (azo moiety) in each of the complexes 1, 2 and 3a. The dissociated chloride ligand(s) were reassociated with the metal following the dehydrogenation reaction to yield the final products. All of the newly synthesized compounds were fully characterized using a variety of physicochemical techniques. Single-crystal X-ray structures of the representative compounds were determined to confirm the identities of the synthesized molecules.
Collapse
Affiliation(s)
- Manas Khatua
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, India
| | - Bappaditya Goswami
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, India
| | - Subhas Samanta
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu 181221, India.
| |
Collapse
|
14
|
Khan FF, Chowdhury AD, Lahiri GK. Bond Activations Assisted by Redox Active Ligand Scaffolds. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000005] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Farheen Fatima Khan
- Department of Chemistry; Indian Institute of Technology Bombay; Powai 400076 Mumbai India
| | | | - Goutam Kumar Lahiri
- Department of Chemistry; Indian Institute of Technology Bombay; Powai 400076 Mumbai India
| |
Collapse
|
15
|
Papanikolaou MG, Elliott A, McAllister J, Gallos JK, Keramidas AD, Kabanos TA, Sproules S, Miras HN. Electrocatalytic hydrogen production by dinuclear cobalt(ii) compounds containing redox-active diamidate ligands: a combined experimental and theoretical study. Dalton Trans 2020; 49:15718-15730. [PMID: 33146215 DOI: 10.1039/d0dt02617d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The chiral dicobalt(ii) complex [CoII2(μ2-L)2] (1) (H2L = N2,N6-di(quinolin-8-yl)pyridine-2,6-dicarboxamide) and its tert-butyl analogue [CoII2(μ2-LBu)2] (2) were structurally characterized and their catalytic evolution of H2 was investigated.
Collapse
Affiliation(s)
| | | | - James McAllister
- West CHEM
- School of Chemistry
- University of Glasgow
- Glasgow G12 8QQ
- UK
| | - John K. Gallos
- Department of Chemistry
- Aristotle University of Thessaloniki
- Thessaloniki GR 541 24
- Greece
| | | | | | - Stephen Sproules
- West CHEM
- School of Chemistry
- University of Glasgow
- Glasgow G12 8QQ
- UK
| | | |
Collapse
|
16
|
van der Vlugt JI. Redox-Active Pincer Ligands. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
17
|
Deka R, Junk PC, Turner DR, Deacon GB, Singh HB. An insight into the redox activity of Ru and Os complexes of the N,N′-bis(2-pyridyl)benzene-1,2-diamine ligand: Structural, electrochemical and electronic structure analysis by density functional theory calculations. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
18
|
Di-manganese(0) carbonyl mediated azo bond cleavage and recombination reaction in azo-aromatic ligand: An effect of extended phenolate donor. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
19
|
Zhang G, Wu J, Zheng S, Neary MC, Mao J, Flores M, Trovitch RJ, Dub PA. Redox-Noninnocent Ligand-Supported Vanadium Catalysts for the Chemoselective Reduction of C═X (X = O, N) Functionalities. J Am Chem Soc 2019; 141:15230-15239. [DOI: 10.1021/jacs.9b07062] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Guoqi Zhang
- Department of Sciences, John Jay College and PhD in Chemistry Program, The Graduate Center of City University of New York, New York, New York 10019, United States
| | - Jing Wu
- Department of Sciences, John Jay College and PhD in Chemistry Program, The Graduate Center of City University of New York, New York, New York 10019, United States
- Department of Chemistry, Hunter College, City University of New York, New York, New York 10065, United States
| | - Shengping Zheng
- Department of Chemistry, Hunter College, City University of New York, New York, New York 10065, United States
| | - Michelle C. Neary
- Department of Chemistry, Hunter College, City University of New York, New York, New York 10065, United States
| | - Jincheng Mao
- State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, People’s Republic of China
| | - Marco Flores
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Ryan J. Trovitch
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Pavel A. Dub
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| |
Collapse
|
20
|
Wang J, Yamauchi K, Huang H, Sun J, Luo Z, Zhong D, Lu T, Sakai K. A Molecular Cobalt Hydrogen Evolution Catalyst Showing High Activity and Outstanding Tolerance to CO and O
2. Angew Chem Int Ed Engl 2019; 58:10923-10927. [DOI: 10.1002/anie.201904578] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Jia‐Wei Wang
- MOE International Joint Laboratory of Materials MicrostructureInstitute for New Energy Materials and Low Carbon TechnologiesTianjin University of Technology Tianjin 300384 China
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Kosei Yamauchi
- Department of ChemistryFaculty of Science, and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)Kyushu University Motooka 744 Nishi-ku Fukuoka 819-0395 Japan
| | - Hai‐Hua Huang
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Jia‐Kai Sun
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Zhi‐Mei Luo
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Di‐Chang Zhong
- MOE International Joint Laboratory of Materials MicrostructureInstitute for New Energy Materials and Low Carbon TechnologiesTianjin University of Technology Tianjin 300384 China
| | - Tong‐Bu Lu
- MOE International Joint Laboratory of Materials MicrostructureInstitute for New Energy Materials and Low Carbon TechnologiesTianjin University of Technology Tianjin 300384 China
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Ken Sakai
- Department of ChemistryFaculty of Science, and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)Kyushu University Motooka 744 Nishi-ku Fukuoka 819-0395 Japan
- Center for Molecular Systems (CMS)Kyushu University Motooka 744 Nishi-ku Fukuoka 819-0395 Japan
| |
Collapse
|
21
|
Wang J, Yamauchi K, Huang H, Sun J, Luo Z, Zhong D, Lu T, Sakai K. A Molecular Cobalt Hydrogen Evolution Catalyst Showing High Activity and Outstanding Tolerance to CO and O
2. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904578] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jia‐Wei Wang
- MOE International Joint Laboratory of Materials MicrostructureInstitute for New Energy Materials and Low Carbon TechnologiesTianjin University of Technology Tianjin 300384 China
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Kosei Yamauchi
- Department of ChemistryFaculty of Science, and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)Kyushu University Motooka 744 Nishi-ku Fukuoka 819-0395 Japan
| | - Hai‐Hua Huang
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Jia‐Kai Sun
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Zhi‐Mei Luo
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Di‐Chang Zhong
- MOE International Joint Laboratory of Materials MicrostructureInstitute for New Energy Materials and Low Carbon TechnologiesTianjin University of Technology Tianjin 300384 China
| | - Tong‐Bu Lu
- MOE International Joint Laboratory of Materials MicrostructureInstitute for New Energy Materials and Low Carbon TechnologiesTianjin University of Technology Tianjin 300384 China
- MOE Key Laboratory of Bioinorganic and Synthetic ChemistrySchool of ChemistrySun Yat-Sen University Guangzhou 510275 China
| | - Ken Sakai
- Department of ChemistryFaculty of Science, and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)Kyushu University Motooka 744 Nishi-ku Fukuoka 819-0395 Japan
- Center for Molecular Systems (CMS)Kyushu University Motooka 744 Nishi-ku Fukuoka 819-0395 Japan
| |
Collapse
|
22
|
Rajpurohit J, Shanmugam M. The molecular and electronic structure of an unusual cobalt NNO pincer ligand complex. Dalton Trans 2019; 48:7378-7387. [PMID: 30949637 DOI: 10.1039/c9dt00056a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of two equivalents of [Co(PMe3)4] (1) with one equivalent of a neutral NNO pincer ligand (L1) led to the formation of purple-coloured single crystals. The crystal structure determination reveals the molecular structure as a cobalt dimer [Co2(L1)(PMe3)5], which is solved in the triclinic P1[combining macron] space group. Although this species appears to have a formal zero oxidation state on cobalt ions, careful analysis of the structural parameters of the L1 reveals that the NNO ligand is reduced by three electrons; this observation has rarely been reported in the literature. Therefore, herein, more accurate description of the molecular formula [(PMe3)2CoII(η4-L13-)CoI(PMe3)3] (2) was proposed. In 2, we observed an unusual η3-π-allyl-type binding mode of the pyridine ring carbon atoms of the L13- ligand with the cobalt ion. X-ray photoelectron spectroscopy not only reveals the presence of the mixed valent cobalt ion within 2 but also unambiguously discloses the spin state of these metal ions (Co(i) diamagnetic (low-spin) and Co(ii) paramagnetic (high-spin)). The proposed electronic structure is consistent with the magnetic moment measured at room temperature. The electronic structure of 2 was further supported by the Q-band EPR measurements performed on polycrystalline sample of 2 at 5.0 K, and the presence of two independent S = ½ states was revealed. This has been qualitatively rationalized based on the super-exchange coupling pathway observed in 2. The NMR studies performed for 2 (C6D6 solvent) evidently showed that the solid-state structure of 2 was maintained in solution.
Collapse
Affiliation(s)
- Jitendrasingh Rajpurohit
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, Maharashtra, India.
| | - Maheswaran Shanmugam
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, Maharashtra, India.
| |
Collapse
|
23
|
Tamang SR, Cozzolino AF, Findlater M. Iron catalysed selective reduction of esters to alcohols. Org Biomol Chem 2019; 17:1834-1838. [PMID: 30604820 DOI: 10.1039/c8ob02661k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The reaction of (dppBIAN)FeCl2 with 3 equivalents of n-BuLi affords a catalytically active anionic Fe complex; the nature of the anionic complex was probed using EPR and IR experiments and is proposed to involve a dearomatized, radical, ligand scaffold. This complex is an active catalyst for the hydrosilylation of esters to afford alcohols; loadings as low as 1 mol% were employed.
Collapse
Affiliation(s)
- Sem Raj Tamang
- Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, TX 79409, USA.
| | | | | |
Collapse
|
24
|
Rahimi N, Herbert DE, Budzelaar PHM. Double and Reversible Alkyl Transfer from ZrBn
4
/HfBn
4
to a Diiminepyridine Ligand. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801304] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Naser Rahimi
- Department of Chemistry University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg MB Canada
| | - David E. Herbert
- Department of Chemistry University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg MB Canada
| | - Peter H. M. Budzelaar
- Department of Chemistry University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg MB Canada
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 4 80126 Napoli Italia
| |
Collapse
|
25
|
Römelt C, Weyhermüller T, Wieghardt K. Structural characteristics of redox-active pyridine-1,6-diimine complexes: Electronic structures and ligand oxidation levels. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.018] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
26
|
Alig L, Fritz M, Schneider S. First-Row Transition Metal (De)Hydrogenation Catalysis Based On Functional Pincer Ligands. Chem Rev 2018; 119:2681-2751. [PMID: 30596420 DOI: 10.1021/acs.chemrev.8b00555] [Citation(s) in RCA: 488] [Impact Index Per Article: 81.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The use of 3d metals in de/hydrogenation catalysis has emerged as a competitive field with respect to "traditional" precious metal catalyzed transformations. The introduction of functional pincer ligands that can store protons and/or electrons as expressed by metal-ligand cooperativity and ligand redox-activity strongly stimulated this development as a conceptual starting point for rational catalyst design. This review aims at providing a comprehensive picture of the utilization of functional pincer ligands in first-row transition metal hydrogenation and dehydrogenation catalysis and related synthetic concepts relying on these such as the hydrogen borrowing methodology. Particular emphasis is put on the implementation and relevance of cooperating and redox-active pincer ligands within the mechanistic scenarios.
Collapse
Affiliation(s)
- Lukas Alig
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Maximilian Fritz
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| | - Sven Schneider
- Universität Göttingen , Institut für Anorganische Chemie , Tammannstrasse 4 , D-37077 Göttingen , Germany
| |
Collapse
|
27
|
Hollingsworth RL, Beattie JW, Grass A, Martin PD, Groysman S, Lord RL. Reactions of dicobalt octacarbonyl with dinucleating and mononucleating bis(imino)pyridine ligands. Dalton Trans 2018; 47:15353-15363. [PMID: 30280749 DOI: 10.1039/c8dt03405b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work focuses on the application of dicobalt octacarbonyl (Co2(CO)8) as a metal precursor in the chemistry of formally low-valent cobalt with redox-active bis(imino)pyridine [NNN] ligands. The reactions of both mononucleating mesityl-substituted bis(aldimino)pyridine (L1) and dinucleating macrocyclic xanthene-bridged di(bis(aldimino)pyridine) (L2) with Co2(CO)8 were investigated. Independent of the metal-to-ligand ratio (1 : 1 or 1 : 2 ligand to Co2(CO)8), the reaction of the dinucleating ligand L2 with Co2(CO)8 produces a tetranuclear complex [Co4(L2)(CO)10] featuring two discrete [Co2[NNN](CO)5] units. In contrast, a related mononucleating bis(aldimino)pyridine ligand, L1, produces different species at different ligand to Co2(CO)8 ratios, including dinuclear [Co2(CO)5(L1)] and zwitterionic [Co(L1)2][Co(CO)4]. Interestingly, [Co4(L2)(CO)10] features metal-metal bonds, and no bridging carbonyls, whereas [Co2(CO)5(L1)] contains cobalt centers bridged by one or two carbonyl ligands. In either case, treatment with excess acetonitrile leads to disproportionation to the zwitterionic [Co[NNN](NCMe)2][Co(CO)4] units. The electronic structures of the complexes described above were studied with density functional theory. All the obtained bis(imino)pyridine complexes serve as catalysts for cyclotrimerization of methyl propiolate, albeit their reactivity is inferior compared with Co2(CO)8.
Collapse
Affiliation(s)
- Ryan L Hollingsworth
- Department of Chemistry, Wayne State University, 5101 Cass Ave, Detroit, MI 48202, USA.
| | | | | | | | | | | |
Collapse
|
28
|
Verhoeven DGA, Negenman HA, Orsino AF, Lutz M, Moret ME. Versatile Coordination and C-C Coupling of Diphosphine-Tethered Imine Ligands with Ni(II) and Ni(0). Inorg Chem 2018; 57:10846-10856. [PMID: 30113165 PMCID: PMC6150681 DOI: 10.1021/acs.inorgchem.8b01478] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
![]()
Ligands
that can adapt their coordination mode to the electronic properties
of a metal center are of interest to support catalysis or small molecule
activation processes. In this context, the ability of imine moieties
to bind in either an η1(N)-fashion via σ-donation
of the lone pair or, less commonly, in an η2(C,N)-fashion
via π-coordination is potentially attractive for the design
of new metal–ligand cooperative systems. Herein, the coordination
chemistry of chelating ligands with a diphosphine imine framework
(PCNP) to nickel is investigated. The imine moiety binds in an η1(N)-fashion in a Ni(II)Cl2 complex. The uncommon
η2(C,N)-interaction is obtained in Ni(0) complexes
in the presence of a PPh3 coligand. Increasing the bulk
on the phosphine side-arms in the Ni(0) complexes, by substituting
phenyl for o-tolyl groups, leads to a distinct binding
mode in which only one of the phosphorus atoms is coordinated. In
the absence of a coligand, a mixture of two different dimeric Ni(0)
complexes is formed. In one of them, the imine adopts an uncommon
η1(N)η2(C,N) bridging mode of the
ligand to nickel, while the second one may involve reactivity on the
ligand by the formation of a new C–C bond by oxidative coupling.
The latter is supported by the isolation and structural characterization
of a crystalline bis-CO derivative featuring a C–C bond formed
by oxidative coupling of two imine moieties. The coordination chemistry
of a series of diphosphine-imine ligands (PCNP) to Ni is investigated,
with the purpose of developing systems that present metal−ligand
cooperativity. The ligands bind in versatile ways, adapting to the
oxidation state and coordination environment of the metal center.
Additionally, a dimeric derivative undergoes oxidative C−C
coupling in the presence of CO, resulting in an unusual mixed valence
Ni(II)/Ni(0) dinuclear complex.
Collapse
Affiliation(s)
- Dide G A Verhoeven
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science , Utrecht University , Universiteitsweg 99 , 3584 CG , Utrecht , The Netherlands
| | - Hidde A Negenman
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science , Utrecht University , Universiteitsweg 99 , 3584 CG , Utrecht , The Netherlands
| | - Alessio F Orsino
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science , Utrecht University , Universiteitsweg 99 , 3584 CG , Utrecht , The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science , Utrecht University , Padualaan 8 , 3584 CH , Utrecht , The Netherlands
| | - Marc-Etienne Moret
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science , Utrecht University , Universiteitsweg 99 , 3584 CG , Utrecht , The Netherlands
| |
Collapse
|
29
|
Cosquer N, Lefebvre E, Douziech B, Houille S, Michaud F, Gómez-García CJ, Conan F. Nickel precursors based on diamagnetic and paramagnetic di(imine)pyridine ligands for magnetic materials: Synthesis, X-ray structures and magnetic studies. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
30
|
Sandoval JJ, Álvarez E, Palma P, Rodríguez-Delgado A, Cámpora J. Neutral Bis(imino)-1,4-dihydropyridinate and Cationic Bis(imino)pyridine σ-Alkylzinc(II) Complexes as Hydride Exchange Systems: Classic Organometallic Chemistry Meets Ligand-Centered, Biomimetic Reactivity. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00183] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John J. Sandoval
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Pilar Palma
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Antonio Rodríguez-Delgado
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Juan Cámpora
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| |
Collapse
|
31
|
Folkertsma E, Benthem SH, Witteman L, van Slagmaat CAMR, Lutz M, Klein Gebbink RJM, Moret ME. Formation of exceptionally weak C-C bonds by metal-templated pinacol coupling. Dalton Trans 2018; 46:6177-6182. [PMID: 28440388 DOI: 10.1039/c7dt01130j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The ability of the bis(imidazolyl)ketone ligand BMdiPhIK (bis(1-methyl-4,5-diphenylimidazolyl)ketone) to function as a redox active ligand has been investigated. The reduction of [M(BMdiPhIK)Cl2] (M = Fe and Zn) complexes resulted in a pinacol-type coupling to form dinuclear complexes featuring very weak and abnormally elongated C-C bonds (1.729(5) and 1.708(3) Å for Fe and Zn, respectively). Oxidation of these complexes using ferrocenium in the presence of Cl- ions regenerated the original [M(BMdiPhIK)Cl2] complexes, showing the reversibility of the coupling process. This makes it a potentially interesting approach for the storage of electrons and application of the BMdiPhIK ligand as a redox active ligand.
Collapse
Affiliation(s)
- E Folkertsma
- Organic Chemistry & Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
| | | | | | | | | | | | | |
Collapse
|
32
|
Wilkin OM, Harris N, Rooms JF, Dixon EL, Bridgeman AJ, Young NA. How Inert, Perturbing, or Interacting Are Cryogenic Matrices? A Combined Spectroscopic (Infrared, Electronic, and X-ray Absorption) and DFT Investigation of Matrix-Isolated Iron, Cobalt, Nickel, and Zinc Dibromides. J Phys Chem A 2018; 122:1994-2029. [DOI: 10.1021/acs.jpca.7b09734] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Owen M. Wilkin
- Department
of Chemistry, The University of Hull, Kingston upon Hull HU6
7RX, U.K
| | - Neil Harris
- Department
of Chemistry, The University of Hull, Kingston upon Hull HU6
7RX, U.K
| | - John F. Rooms
- Department
of Chemistry, The University of Hull, Kingston upon Hull HU6
7RX, U.K
| | - Emma L. Dixon
- Department
of Chemistry, The University of Hull, Kingston upon Hull HU6
7RX, U.K
| | - Adam J. Bridgeman
- School
of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Nigel A. Young
- Department
of Chemistry, The University of Hull, Kingston upon Hull HU6
7RX, U.K
| |
Collapse
|
33
|
Noss ME, Hylden AT, Carroll PJ, Berry DH. Electrochemistry of Ruthenium Bis(imino)pyridine Compounds: Evidence for an ECE Mechanism and Isolation of Mono and Dicationic Complexes. Inorg Chem 2017; 57:435-445. [DOI: 10.1021/acs.inorgchem.7b02677] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael E. Noss
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Anne T. Hylden
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Patrick J. Carroll
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Donald H. Berry
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| |
Collapse
|
34
|
Ortuño MA, Cramer CJ. Multireference Electronic Structures of Fe–Pyridine(diimine) Complexes over Multiple Oxidation States. J Phys Chem A 2017; 121:5932-5939. [DOI: 10.1021/acs.jpca.7b06032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Manuel A. Ortuño
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christopher J. Cramer
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| |
Collapse
|
35
|
Rahimi N, de Bruin B, Budzelaar PHM. Balance between Metal and Ligand Reduction in Diiminepyridine Complexes of Ti. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00239] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Naser Rahimi
- Department
of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
| | - Bas de Bruin
- Van
’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Peter H. M. Budzelaar
- Department
of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
- Department
of Chemical Sciences, Federico II University of Naples, Via Cintia, Complesso di Monte S. Angelo, 80126 Napoli, Italy
| |
Collapse
|
36
|
Raya B, Jing S, Balasanthiran V, RajanBabu TV. Control of Selectivity through Synergy between Catalysts, Silanes and Reaction Conditions in Cobalt-Catalyzed Hydrosilylation of Dienes and Terminal Alkenes. ACS Catal 2017; 7:2275-2283. [PMID: 28593082 DOI: 10.1021/acscatal.6b03373] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Readily accessible ( i-PrPDI)CoCl2 [ i-Pr PDI = 2,6-bis(2,6-diisopropylphenyliminoethyl)pyridine] reacts with 2 equivalents of NaEt3BH at -78 °C in toluene to generate a catalyst that effects highly selective anti-Markovnikov hydrosilylation of the terminal double bond in 1,3- and 1,4-dienes. Primary and secondary silanes such as PhSiH3, Ph2SiH2 and PhSi(Me)H2 react with a broad spectrum of terminal dienes without affecting the configuration of the other double bond. When dienes conjugated to an aromatic ring are involved, both Markovnikov and anti-Markovnikov products are formed. The reaction is tolerant of various functional groups such as an aryl bromide, aryl iodide, protected alcohol, and even a silyl enol ether. Reactions of 1-alkene under similar conditions cleanly lead to a mixture of Markovnikov and anti-Markovnikov hydrosilation products, where ratio of the products increasingly favors the latter, as the size of the 2,6-substituents in the iminoylaryl group becomes larger. The complex ( i-PrPDI)CoCl2 gives exclusively the linear silane for a wide variety of terminal alkenes. Mechanistic studies suggest a pathway that involves a key role for an in situ generated metal hydride, (L)Co(I)-H. Exclusive reduction of the terminal double bond (vis-a-vis hydrosilylation) when (EtO)2Si(Me)H is used in the place of PhSiH3 is explained on the basis of an alternate silane-mediated decomposition path for the linear Co(I)-alkyl intermediate.
Collapse
Affiliation(s)
- Balaram Raya
- Department of Chemistry and
Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Stanley Jing
- Department of Chemistry and
Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Vagulejan Balasanthiran
- Department of Chemistry and
Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - T. V. RajanBabu
- Department of Chemistry and
Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| |
Collapse
|
37
|
Cammarota RC, Clouston LJ, Lu CC. Leveraging molecular metal–support interactions for H2 and N2 activation. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.06.014] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
38
|
Peters GM, Winegrad JB, Gau MR, Imler GH, Xu B, Ren S, Wayland BB, Zdilla MJ. Synthesis and Structure of 2,5-Bis[N-(2,6-mesityl)iminomethyl]pyrrolylcobalt(II): Evidence for One-Electron-Oxidized, Redox Noninnocent Ligand Behavior. Inorg Chem 2017; 56:3377-3385. [DOI: 10.1021/acs.inorgchem.6b02898] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Garvin M. Peters
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Jacob B. Winegrad
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Michael R. Gau
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Gregory H. Imler
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Beibei Xu
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Shenqiang Ren
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Bradford B. Wayland
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Michael J. Zdilla
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| |
Collapse
|
39
|
Reed BR, Yousif M, Lord RL, McKinnon M, Rochford J, Groysman S. Coordination Chemistry and Reactivity of Bis(aldimino)pyridine Nickel Complexes in Four Different Oxidation States. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00793] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Blake R. Reed
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Maryam Yousif
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Richard L. Lord
- Department
of Chemistry, Grand Valley State University, Allendale, Michigan 49401, United States
| | - Meaghan McKinnon
- Department
of Chemistry, University of Massachusetts Boston, 100 Morrissey
Boulevard, Boston, Massachusetts 02125, United States
| | - Jonathan Rochford
- Department
of Chemistry, University of Massachusetts Boston, 100 Morrissey
Boulevard, Boston, Massachusetts 02125, United States
| | - Stanislav Groysman
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| |
Collapse
|
40
|
Behlen MJ, Zhou YY, Steiman TJ, Pal S, Hartline DR, Zeller M, Uyeda C. Dinuclear oxidative addition reactions using an isostructural series of Ni2, Co2, and Fe2 complexes. Dalton Trans 2017; 46:5493-5497. [PMID: 27996067 DOI: 10.1039/c6dt04465d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dinuclear oxidative additions at metal–metal bonds are facilitated by redox-active supporting ligands.
Collapse
Affiliation(s)
| | - You-Yun Zhou
- Department of Chemistry
- Purdue University
- West Lafayette
- USA
| | | | - Sudipta Pal
- Department of Chemistry
- Purdue University
- West Lafayette
- USA
| | | | | | | |
Collapse
|
41
|
Sandoval JJ, Melero C, Palma P, Álvarez E, Rodríguez-Delgado A, Cámpora J. Oxygen-Induced Dimerization of Alkyl-Manganese(II) 2,6-Bisiminopyridine Complexes: Selective Synthesis of a New Ditopic NNN-Pincer Ligand. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00538] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- John J. Sandoval
- Instituto de Investigaciones
Químicas, CSIC − Universidad de Sevilla, c/Américo
Vespucio, 49, 41092 Sevilla, SPAIN
| | - Cristóbal Melero
- Instituto de Investigaciones
Químicas, CSIC − Universidad de Sevilla, c/Américo
Vespucio, 49, 41092 Sevilla, SPAIN
| | - Pilar Palma
- Instituto de Investigaciones
Químicas, CSIC − Universidad de Sevilla, c/Américo
Vespucio, 49, 41092 Sevilla, SPAIN
| | - Eleuterio Álvarez
- Instituto de Investigaciones
Químicas, CSIC − Universidad de Sevilla, c/Américo
Vespucio, 49, 41092 Sevilla, SPAIN
| | - Antonio Rodríguez-Delgado
- Instituto de Investigaciones
Químicas, CSIC − Universidad de Sevilla, c/Américo
Vespucio, 49, 41092 Sevilla, SPAIN
| | - Juan Cámpora
- Instituto de Investigaciones
Químicas, CSIC − Universidad de Sevilla, c/Américo
Vespucio, 49, 41092 Sevilla, SPAIN
| |
Collapse
|
42
|
Charboneau DJ, Balcells D, Hazari N, Lant HMC, Mayer JM, Melvin PR, Mercado BQ, Morris WD, Repisky M, Suh HW. Dinitrogen-Facilitated Reversible Formation of a Si–H Bond in a Pincer-Supported Ni Complex. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00514] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- David J. Charboneau
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - David Balcells
- Centre
for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O.
Box 1033, Blindern, N-0315 Oslo, Norway
| | - Nilay Hazari
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Hannah M. C. Lant
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - James M. Mayer
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Patrick R. Melvin
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Brandon Q. Mercado
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Wesley D. Morris
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Michal Repisky
- Centre
for Theoretical and Computational Chemistry (CTCC), University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Hee-Won Suh
- The
Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| |
Collapse
|
43
|
Sandoval JJ, Palma P, Álvarez E, Cámpora J, Rodríguez-Delgado A. Mechanism of Alkyl Migration in Diorganomagnesium 2,6-Bis(imino)pyridine Complexes: Formation of Grignard-Type Complexes with Square-Planar Mg(II) Centers. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00528] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- John J. Sandoval
- Instituto
de Investigaciones
Químicas, CSIC − Universidad de Sevilla, C/Américo
Vespucio, 49, 41092, Sevilla, Spain
| | - Pilar Palma
- Instituto
de Investigaciones
Químicas, CSIC − Universidad de Sevilla, C/Américo
Vespucio, 49, 41092, Sevilla, Spain
| | - Eleuterio Álvarez
- Instituto
de Investigaciones
Químicas, CSIC − Universidad de Sevilla, C/Américo
Vespucio, 49, 41092, Sevilla, Spain
| | - Juan Cámpora
- Instituto
de Investigaciones
Químicas, CSIC − Universidad de Sevilla, C/Américo
Vespucio, 49, 41092, Sevilla, Spain
| | - Antonio Rodríguez-Delgado
- Instituto
de Investigaciones
Químicas, CSIC − Universidad de Sevilla, C/Américo
Vespucio, 49, 41092, Sevilla, Spain
| |
Collapse
|
44
|
Raya B, Biswas S, RajanBabu TV. Selective Cobalt-Catalyzed Reduction of Terminal Alkenes and Alkynes Using (EtO) 2Si(Me)H as a Stoichiometric Reductant. ACS Catal 2016; 6:6318-6323. [PMID: 28078166 DOI: 10.1021/acscatal.6b02272] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
While attempting to effect Co-catalyzed hydrosilylation of β-vinyl trimethylsilyl enol ethers we discovered that depending on the silane, solvent and the method of generation of the reduced cobalt catalyst, a highly efficient and selective reduction or hydrosilylation of an alkene can be achieved. This paper deals with this reduction reaction, which has not been reported before in spite of the huge research activity in this area. The reaction, which uses an air-stable [2,6-di(aryliminoyl)pyridine)]CoCl2 activated by 2 equivalents of NaEt3BH as a catalyst (0.001-0.05 equiv) and (EtO)2SiMeH as the hydrogen source, is best run at ambient temperature in toluene and is highly selective for the reduction of simple unsubstituted 1-alkenes and the terminal double bonds in 1,3- and 1,4-dienes, β-vinyl ketones and silyloxy dienes. The reaction is tolerant of various functional groups such as a bromide, alcohol, amine, carbonyl, and di or trisubstituted double bonds, and water. Highly selective reduction of a terminal alkyne to either an alkene or alkane can be accomplished by using stoichiometric amounts of the silane. Preliminary mechanistic studies indicate that the reaction is stoichiometric in the silane and both hydrogens in the product come from the silane.
Collapse
Affiliation(s)
- Balaram Raya
- Department of Chemistry and
Biochemistry, 100 West
18th Avenue, The Ohio State University, Columbus, Ohio 43210, United States
| | - Souvagya Biswas
- Department of Chemistry and
Biochemistry, 100 West
18th Avenue, The Ohio State University, Columbus, Ohio 43210, United States
| | - T. V. RajanBabu
- Department of Chemistry and
Biochemistry, 100 West
18th Avenue, The Ohio State University, Columbus, Ohio 43210, United States
| |
Collapse
|
45
|
Jacquet J, Desage-El Murr M, Fensterbank L. Metal-Promoted Coupling Reactions Implying Ligand-Based Redox Changes. ChemCatChem 2016. [DOI: 10.1002/cctc.201600616] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jérémy Jacquet
- Sorbonne Universités, UPMC, Université Paris 06,UMR CNRS 8232, Institut Parisien de Chimie Moléculaire; France
| | - Marine Desage-El Murr
- Sorbonne Universités, UPMC, Université Paris 06,UMR CNRS 8232, Institut Parisien de Chimie Moléculaire; France
| | - Louis Fensterbank
- Sorbonne Universités, UPMC, Université Paris 06,UMR CNRS 8232, Institut Parisien de Chimie Moléculaire; France
| |
Collapse
|
46
|
|
47
|
Campos J, López-Serrano J, Peloso R, Carmona E. Methyl Complexes of the Transition Metals. Chemistry 2016; 22:6432-57. [PMID: 26991740 DOI: 10.1002/chem.201504483] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 01/11/2023]
Abstract
Organometallic chemistry can be considered as a wide area of knowledge that combines concepts of classic organic chemistry, that is, based essentially on carbon, with molecular inorganic chemistry, especially with coordination compounds. Transition-metal methyl complexes probably represent the simplest and most fundamental way to view how these two major areas of chemistry combine and merge into novel species with intriguing features in terms of reactivity, structure, and bonding. Citing more than 500 bibliographic references, this review aims to offer a concise view of recent advances in the field of transition-metal complexes containing M-CH3 fragments. Taking into account the impressive amount of data that are continuously provided by organometallic chemists in this area, this review is mainly focused on results of the last five years. After a panoramic overview on M-CH3 compounds of Groups 3 to 11, which includes the most recent landmark findings in this area, two further sections are dedicated to methyl-bridged complexes and reactivity.
Collapse
Affiliation(s)
- Jesús Campos
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Joaquín López-Serrano
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química, Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Cientificas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Riccardo Peloso
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química, Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Cientificas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Ernesto Carmona
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química, Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Cientificas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain.
| |
Collapse
|
48
|
Eberle B, Damjanović M, Enders M, Leingang S, Pfisterer J, Krämer C, Hübner O, Kaifer E, Himmel HJ. Radical Monocationic Guanidino-Functionalized Aromatic Compounds (GFAs) as Bridging Ligands in Dinuclear Metal Acetate Complexes: Synthesis, Electronic Structure, and Magnetic Coupling. Inorg Chem 2016; 55:1683-96. [DOI: 10.1021/acs.inorgchem.5b02614] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Benjamin Eberle
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Marko Damjanović
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Markus Enders
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Simone Leingang
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Jessica Pfisterer
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Christoph Krämer
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Olaf Hübner
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Elisabeth Kaifer
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hans-Jörg Himmel
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| |
Collapse
|
49
|
Walter M. Recent Advances in Transition Metal-Catalyzed Dinitrogen Activation. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2016. [DOI: 10.1016/bs.adomc.2016.03.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
|
50
|
Simler T, Braunstein P, Danopoulos AA. Cobalt PNCNHC ‘pincers’: ligand dearomatisation, formation of dinuclear and N2 complexes and promotion of C–H activation. Chem Commun (Camb) 2016; 52:2717-20. [DOI: 10.1039/c5cc10121b] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Ligand dearomatisation in CoII phosphino-picoline NHC-type pincers and dicobalt complexes result from side-arm metalation or C–H activation at the NHC backbone; in the latter case, an ‘anionic dicarbene’ originates from a dearomatised CoI–N2 complex.
Collapse
Affiliation(s)
- Thomas Simler
- Laboratoire de Chimie de Coordination
- Institut de Chimie (UMR 7177 CNRS)
- Université de Strasbourg
- 67081 Strasbourg Cedex
- France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination
- Institut de Chimie (UMR 7177 CNRS)
- Université de Strasbourg
- 67081 Strasbourg Cedex
- France
| | - Andreas A. Danopoulos
- Laboratoire de Chimie de Coordination
- Institut de Chimie (UMR 7177 CNRS)
- Université de Strasbourg
- 67081 Strasbourg Cedex
- France
| |
Collapse
|