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Webber CK, Kong F, Kumawat J, Joy J, Richardson EK, Siano P, Dickie DA, Ess DH, Gunnoe TB. Synthesis of Quinoline-Based Pt-Sb Complexes with L- or Z-Type Interaction: Ligand-Controlled Redox via Anion Transfer. Organometallics 2024; 43:1789-1802. [PMID: 39268180 PMCID: PMC11388469 DOI: 10.1021/acs.organomet.4c00221] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/26/2024] [Accepted: 07/31/2024] [Indexed: 09/15/2024]
Abstract
A series of Pt-Sb complexes with two or three L-type quinoline side arms were prepared and studied. Two ligands, tri(8-quinolinyl)stibane (SbQ3, Q = 8-quinolinyl, 1) and 8,8'-(phenylstibanediyl)diquinoline (SbQ2Ph, 2), were used to synthesize the PtII-SbIII complexes (SbQ3)PtCl2 (3) and (SbQ2Ph)PtCl2 (4). Chloride abstraction with AgOAc provided the bis-acetate complexes (SbQ3)Pt(OAc)2 (5) and (SbQ2Ph)Pt(OAc)2 (6). To better understand the electronic effects of the Sb moiety, analogous bis-chloride complexes were oxidized to an overall formal oxidation state of +7 (i.e., Pt + Sb formal oxidation states = 7) using dichloro(phenyl)-λ3-iodane (PhICl2) and 3,4,5,6-tetrachloro-1,2-dibenzoquinone (o-chloranil) as two-electron oxidants. Depending on the oxidant, different conformational changes occur within the coordination sphere of Pt as confirmed by single-crystal X-ray diffraction and NMR spectroscopy. In addition, the nature of Pt-Sb interactions was evaluated via molecular and localized orbital calculations.
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Affiliation(s)
- Christopher K Webber
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Fanji Kong
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Jugal Kumawat
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84604, United States
| | - Jyothish Joy
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84604, United States
| | - Erica K Richardson
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Paolo Siano
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Diane A Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Daniel H Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84604, United States
| | - T Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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Aseman MD, Kiyavash S. High Selectivity in Csp 2-Csp 2 versus Csp 3-O Reductive Elimination from Cycloplatinated(IV) Complexes. Inorg Chem 2024; 63:12475-12484. [PMID: 38907728 DOI: 10.1021/acs.inorgchem.4c01096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2024]
Abstract
The cycloplatinated(IV) complexes trans-[Pt(p-MeC6H4)(C∧N)(OAc)2(H2O)] (C∧N = benzo[h]quinolate, bhq, 2a, and 2-phenylpyridinate, ppy, 2b) were prepared by reacting the corresponding [Pt(p-MeC6H4)(C∧N)(SMe2)] precursors with PhI(OAc)2 through an oxidative addition (OA) reaction. Thermolysis of 2a at 65 °C generates cis-[Pt(κ1N-10-(p-MeC6H4)-bhq)(OAc)2(H2O)], 3a, which is the product of a Csp2Ar-Csp2bhq reductive elimination (RE). The observed coupling reaction is significantly different from the previously reported analogous thermolysis of trans-[PtMe(C∧N)(OAc)2(H2O)] (C∧N = bhq, 2c, and ppy, 2d) that selectively releases Me-OAc (C-O RE). The density functional theory (DFT) calculations and experimental observations reveal that the Csp2Ar-Csp2bhq coupling reaction occurs through the dissociation of a coordinated water ligand. This in turn is followed by the concomitant bond forming and bond breaking process via a three-center ring transition state, in contrast to the Csp3Me-OAc coupling, which had taken place by an outer sphere SN2 type RE reaction in methyl complexes.
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Affiliation(s)
- Marzieh Dadkhah Aseman
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box, Tehran 14115-175, Iran
| | - Susan Kiyavash
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box, Tehran 14115-175, Iran
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Zhang K, Musgrave CB, Dickie DA, Goddard WA, Gunnoe TB. Capping Arene Ligated Rhodium-Catalyzed Olefin Hydrogenation: A Model Study of the Ligand Influence on a Catalytic Process That Incorporates Oxidative Addition and Reductive Elimination. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00317] [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]
Affiliation(s)
- Ke Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Charles B. Musgrave
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
| | - Diane A. Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - William A. Goddard
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
| | - T. Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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Liu C, Geer AM, Webber C, Musgrave CB, Gu S, Johnson G, Dickie DA, Chabbra S, Schnegg A, Zhou H, Sun CJ, Hwang S, Goddard WA, Zhang S, Gunnoe TB. Immobilization of “Capping Arene” Cobalt(II) Complexes on Ordered Mesoporous Carbon for Electrocatalytic Water Oxidation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Chang Liu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Ana M. Geer
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Christopher Webber
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Charles B. Musgrave
- Materials and Process Simulation Center, Department of Chemistry, California Institute of Technology, Pasadena, California 91125, United States
| | - Shunyan Gu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Grayson Johnson
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Diane A. Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Sonia Chabbra
- EPR Research Group, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Alexander Schnegg
- EPR Research Group, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Hua Zhou
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Cheng-Jun Sun
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Sooyeon Hwang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - William A. Goddard
- Materials and Process Simulation Center, Department of Chemistry, California Institute of Technology, Pasadena, California 91125, United States
| | - Sen Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - T. Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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Gu S, Musgrave CB, Gehman ZM, Zhang K, Dickie DA, Goddard WA, Gunnoe TB. Rhodium and Iridium Complexes Bearing “Capping Arene” Ligands: Synthesis and Characterization. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00250] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shunyan Gu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Charles B. Musgrave
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
| | - Zoë M. Gehman
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Ke Zhang
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Diane A. Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - William A. Goddard
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
| | - T. Brent Gunnoe
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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