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Pichaandi KR, Kabalan L, Amini H, Zhang G, Zhu H, Kenttämaa HI, Fanwick PE, Miller JT, Kais S, Nabavizadeh SM, Rashdi M, Abu-Omar MM. Mechanism of Me-Re Bond Addition to Platinum(II) and Dioxygen Activation by the Resulting Pt-Re Bimetallic Center. Inorg Chem 2017; 56:2145-2152. [PMID: 28165752 DOI: 10.1021/acs.inorgchem.6b02801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Unusual cis-oxidative addition of methyltrioxorhenium (MTO) to [PtMe2(bpy)], (bpy = 2,2'-bipyridine) (1) is described. Addition of MTO to 1 first gives the Lewis acid-base adduct [(bpy)Me2Pt-Re(Me)(O)3] (2) and subsequently affords the oxidative addition product [(bpy)Me3PtReO3] (3). All complexes 1, MTO, 2, and 3 are in equilibrium in solution. The structure of 2 was confirmed by X-ray crystallography, and its dissociation constant in solution is 0.87 M. The structure of 3 was confirmed by extended X-ray absorption fine structure and X-ray absorption near-edge structure in tandem with one- and two-dimensional NMR spectroscopy augmented by deuterium and 13C isotope-labeling studies. Kinetics of formation of compound 3 revealed saturation kinetics dependence on [MTO] and first-order in [Pt], complying with prior equilibrium formation of 2 with oxidative addition of Me-Re being the rate-determining step. Exposure of 3 to molecular oxygen or air resulted in the insertion of an oxygen atom into the platinum-rhenium bond forming [(bpy)Me3PtOReO3] (4) as final product. Density functional theory analysis on oxygen insertion pathways leading to complex 4, merited on the basis of Russell oxidation pathway, revealed the involvement of rhenium peroxo species.
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Affiliation(s)
- Kothanda Rama Pichaandi
- Brown Laboratory, Department of Chemistry, Purdue University , 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Lara Kabalan
- Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation , Doha, Qatar
| | - Hashem Amini
- Department of Chemistry, College of Sciences, Shiraz University , Shiraz, 71467-13565 Iran
| | - Guanghui Zhang
- School of Chemical Engineering, Purdue University , Forney Hall of Chemical Engineering, 480 Stadium Drive, West Lafayette, Indiana 47907, United States
| | - Hanyu Zhu
- Brown Laboratory, Department of Chemistry, Purdue University , 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Hilkka I Kenttämaa
- Brown Laboratory, Department of Chemistry, Purdue University , 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Phillip E Fanwick
- Brown Laboratory, Department of Chemistry, Purdue University , 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Jeffrey T Miller
- School of Chemical Engineering, Purdue University , Forney Hall of Chemical Engineering, 480 Stadium Drive, West Lafayette, Indiana 47907, United States
| | - Sabre Kais
- Brown Laboratory, Department of Chemistry, Purdue University , 560 Oval Drive, West Lafayette, Indiana 47907, United States.,Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation , Doha, Qatar
| | - S Masoud Nabavizadeh
- Department of Chemistry, College of Sciences, Shiraz University , Shiraz, 71467-13565 Iran
| | - Mehdi Rashdi
- Department of Chemistry, College of Sciences, Shiraz University , Shiraz, 71467-13565 Iran
| | - Mahdi M Abu-Omar
- Brown Laboratory, Department of Chemistry, Purdue University , 560 Oval Drive, West Lafayette, Indiana 47907, United States.,School of Chemical Engineering, Purdue University , Forney Hall of Chemical Engineering, 480 Stadium Drive, West Lafayette, Indiana 47907, United States
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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.
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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.
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Pichaandi KR, Kabalan L, Kais S, Abu-Omar MM. Mechanism of Isomerization and Methyl Migration in Heterobimetallic Rhenium–Iridium Complexes: Experimental and DFT Study. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kothanda Rama Pichaandi
- Brown
Laboratory, Department of Chemistry, Purdue University, 560 Oval
Drive, West Lafayette, Indiana 47907, United States
| | - Lara Kabalan
- Qatar
Environment and Energy Research Institute, Hamd Bin Khalifa University, Qatar Foundation, PO Box 5825, Doha, Qatar
| | - Sabre Kais
- Brown
Laboratory, Department of Chemistry, Purdue University, 560 Oval
Drive, West Lafayette, Indiana 47907, United States
- Qatar
Environment and Energy Research Institute, Hamd Bin Khalifa University, Qatar Foundation, PO Box 5825, Doha, Qatar
| | - Mahdi M. Abu-Omar
- Brown
Laboratory, Department of Chemistry, Purdue University, 560 Oval
Drive, West Lafayette, Indiana 47907, United States
- School
of Chemical Engineering, Purdue University, Forney Hall of Chemical Engineering, 480 Stadium Drive, West Lafayette, Indiana 47907, United States
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