1
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Portugués A, López‐García I, Jiménez‐Bernad J, Bautista D, Gil‐Rubio J. Photoinitiated Reactions of Haloperfluorocarbons with Gold(I) Organometallic Complexes: Perfluoroalkyl Gold(I) and Gold(III) Complexes. Chemistry 2019; 25:15535-15547. [DOI: 10.1002/chem.201903058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Alejandro Portugués
- Departamento de Química InorgánicaFacultad de QuímicaUniversidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Inmaculada López‐García
- Departamento de Química InorgánicaFacultad de QuímicaUniversidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Javier Jiménez‐Bernad
- Departamento de Química InorgánicaFacultad de QuímicaUniversidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Delia Bautista
- ACTI.Universidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Juan Gil‐Rubio
- Departamento de Química InorgánicaFacultad de QuímicaUniversidad de Murcia Campus de Espinardo 30100 Murcia Spain
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2
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Suzaki Y, Kiho M, Osakada K. Fluoroalkylation of a Methylplatinum(II) Complex under Photoirradiation. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuji Suzaki
- Laboratory for Chemistry
and Life Science, Institute of Innovative Research, R1-3, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Minetada Kiho
- Laboratory for Chemistry
and Life Science, Institute of Innovative Research, R1-3, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kohtaro Osakada
- Laboratory for Chemistry
and Life Science, Institute of Innovative Research, R1-3, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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3
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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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4
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Polo A, Duran J, Juanola R, Real J, Benet-Buchholz J, Solà M, Poater A. Tuning diastereoisomerism in platinum(ii) phosphino- and aminothiolato hydrido complexes. NEW J CHEM 2017. [DOI: 10.1039/c6nj04042j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Tuning between the cis and trans Pt(ii) based complexes bearing phosphinothiolato and aminothiolato ligands.
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Affiliation(s)
- A. Polo
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
| | - J. Duran
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
| | - R. Juanola
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
| | - J. Real
- Departament de Química
- Universitat Autònoma de Barcelona
- 08193 Bellaterra
- Spain
| | - J. Benet-Buchholz
- Institute of Chemical Research of Catalonia (ICIQ)
- 43007 Tarragona
- Spain
| | - M. Solà
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
| | - A. Poater
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
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5
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Organophosphines in organoplatinum complexes structural aspects of PtPC3 and PtP2CX (X = H, F or OL) derivatives. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.03.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Melník M, Mikuš P. Organophosphines in organoplatinum complexes – structural aspects of cis-PtP2C2 derivatives. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Nenajdenko VG, Muzalevskiy VM, Shastin AV. Polyfluorinated ethanes as versatile fluorinated C2-building blocks for organic synthesis. Chem Rev 2015; 115:973-1050. [PMID: 25594605 DOI: 10.1021/cr500465n] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Valentine G Nenajdenko
- Department of Chemistry, Moscow State University , Leninskie Gory, Moscow 119992, Russia
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8
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Nabavizadeh SM, Amini H, Rashidi M, Pellarin KR, McCready MS, Cooper BF, Puddephatt RJ. The mechanism of oxidative addition of iodine to a dimethylplatinum(II) complex. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.04.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Taw FL, Clark AE, Mueller AH, Janicke MT, Cantat T, Scott BL, Hay PJ, Hughes RP, Kiplinger JL. Titanium(IV) Trifluoromethyl Complexes: New Perspectives on Bonding from Organometallic Fluorocarbon Chemistry. Organometallics 2012. [DOI: 10.1021/om201055e] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Felicia L. Taw
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Aurora E. Clark
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | | | - Michael T. Janicke
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Thibault Cantat
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Brian L. Scott
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - P. Jeffrey Hay
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Russell P. Hughes
- Dartmouth College, 6128 Burke Laboratories, Hanover, New Hampshire 03755, United States
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10
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Martínez-Salvador S, Forniés J, Martín A, Menjón B. Highly Trifluoromethylated Platinum Compounds. Chemistry 2011; 17:8085-97. [DOI: 10.1002/chem.201100626] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Indexed: 11/11/2022]
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11
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Hollas AM, Gu W, Bhuvanesh N, Ozerov OV. Synthesis and Characterization of Pd Complexes of a Carbazolyl/Bis(Imine) NNN Pincer Ligand. Inorg Chem 2011; 50:3673-9. [DOI: 10.1021/ic200026p] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aaron M. Hollas
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Weixing Gu
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842, United States
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12
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Mazzeo M, Strianese M, Kühl O, Peters JC. Phosphido pincer complexes of platinum: synthesis, structure and reactivity. Dalton Trans 2011; 40:9026-33. [DOI: 10.1039/c1dt10825e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Goodman J, Grushin VV, Larichev RB, Macgregor SA, Marshall WJ, Roe DC. Fluxionality of [(Ph3P)3M(X)] (M = Rh, Ir). The Red and Orange Forms of [(Ph3P)3Ir(Cl)]. Which Phosphine Dissociates Faster from Wilkinson’s Catalyst? J Am Chem Soc 2010; 132:12013-26. [DOI: 10.1021/ja1039693] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jenni Goodman
- Central Research & Development, E. I. DuPont de Nemours & Co., Inc., Experimental Station, Wilmington, Delaware 19880, School of Engineering and Physical Sciences, William H. Perkin Building, Heriot-Watt University, Edinburgh EH14 4AS, U.K., and The Institute of Chemical Research of Catalonia (ICIQ), Tarragona 43007, Spain
| | - Vladimir V. Grushin
- Central Research & Development, E. I. DuPont de Nemours & Co., Inc., Experimental Station, Wilmington, Delaware 19880, School of Engineering and Physical Sciences, William H. Perkin Building, Heriot-Watt University, Edinburgh EH14 4AS, U.K., and The Institute of Chemical Research of Catalonia (ICIQ), Tarragona 43007, Spain
| | - Roman B. Larichev
- Central Research & Development, E. I. DuPont de Nemours & Co., Inc., Experimental Station, Wilmington, Delaware 19880, School of Engineering and Physical Sciences, William H. Perkin Building, Heriot-Watt University, Edinburgh EH14 4AS, U.K., and The Institute of Chemical Research of Catalonia (ICIQ), Tarragona 43007, Spain
| | - Stuart A. Macgregor
- Central Research & Development, E. I. DuPont de Nemours & Co., Inc., Experimental Station, Wilmington, Delaware 19880, School of Engineering and Physical Sciences, William H. Perkin Building, Heriot-Watt University, Edinburgh EH14 4AS, U.K., and The Institute of Chemical Research of Catalonia (ICIQ), Tarragona 43007, Spain
| | - William J. Marshall
- Central Research & Development, E. I. DuPont de Nemours & Co., Inc., Experimental Station, Wilmington, Delaware 19880, School of Engineering and Physical Sciences, William H. Perkin Building, Heriot-Watt University, Edinburgh EH14 4AS, U.K., and The Institute of Chemical Research of Catalonia (ICIQ), Tarragona 43007, Spain
| | - D. Christopher Roe
- Central Research & Development, E. I. DuPont de Nemours & Co., Inc., Experimental Station, Wilmington, Delaware 19880, School of Engineering and Physical Sciences, William H. Perkin Building, Heriot-Watt University, Edinburgh EH14 4AS, U.K., and The Institute of Chemical Research of Catalonia (ICIQ), Tarragona 43007, Spain
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14
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Huang H, Rheingold AL, Hughes RP. Synthesis and X-ray Structure of a Diamagnetic Oxo-Bridged Trifluoromethyl−Chromium(V) Complex: Structural and Computational Comparisons between CF3 and CH3 Ligands in Two Different Oxidation States of Chromium. Organometallics 2010. [DOI: 10.1021/om100543t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui Huang
- Departments of Chemistry, 6128 Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, and University of California, San Diego, California 92093-0358
| | - Arnold L. Rheingold
- Departments of Chemistry, 6128 Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, and University of California, San Diego, California 92093-0358
| | - Russell P. Hughes
- Departments of Chemistry, 6128 Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, and University of California, San Diego, California 92093-0358
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15
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Nakamura A, Ito S, Nozaki K. Coordination−Insertion Copolymerization of Fundamental Polar Monomers. Chem Rev 2009; 109:5215-44. [DOI: 10.1021/cr900079r] [Citation(s) in RCA: 696] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Akifumi Nakamura
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656, Japan
| | - Shingo Ito
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656, Japan
| | - Kyoko Nozaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656, Japan
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16
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Zhao SB, Wang RY, Wang S. Reactivity of SiMe3- and SnR3-Functionalized Bis(7-azaindol-1-yl)methane with [PtR2(μ-SMe2)]n (R = Me, Ph) and the Resulting Pt(II) and Pt(IV) Complexes. Organometallics 2009. [DOI: 10.1021/om900022n] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shu-Bin Zhao
- Department of Chemistry, Queen’s University Kingston, Ontario K7L 3N6, Canada
| | - Rui-Yao Wang
- Department of Chemistry, Queen’s University Kingston, Ontario K7L 3N6, Canada
| | - Suning Wang
- Department of Chemistry, Queen’s University Kingston, Ontario K7L 3N6, Canada
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17
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Kelly ME, Gómez-Ruiz S, Kluge R, Merzweiler K, Steinborn D, Wagner C, Schmidt H. Studies of mononuclear and dinuclear complexes of dibromodimethylplatinum(IV): Preparation, characterization and crystal structures. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.06.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Huang H, Hurubeanu NR, Bourgeois CJ, Cheah SM, Yuan J, Rheingold AL, Hughes RP. Octahedral perfluoroalkyl complexes of Ir(III) formed by oxidative addition of perfluoroalkyl iodides to Ir(acac)(CO)2. CAN J CHEM 2009. [DOI: 10.1139/v08-114] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oxidative addition of primary, secondary, or benzylic perfluoroalkyl iodides (RF–I) to the phosphine free Ir(I) precursor Ir(acac)(CO)2 1 (acac = 2,4-pentanedionato) proceeds smoothly to afford octahedral Ir(III) products Ir(acac)(I)(RF)(CO)2, A combination of X-ray crystallographic studies and solution spectroscopy shows that these products are the result of overall trans-addition of the C–I bond to iridium, probably a result of thermodynamic control; evidence for a kinetic product resulting from net cis-addition is obtained in one case. Treatment of the Ir(III) compounds with AgOTf (Tf = CF3SO3) illustrates that the iodo ligand is replaced by triflate with retention of stereochemistry at Ir. The resulting triflate complexes are inert to displacement by H2O or H2. The Ir(III) products exhibit very high CO stretching frequencies in the IR, indicating that the CO ligands may be non-classical. A quantitative estimation of the degree of backbonding to the CO ligands in these compounds, and a comparison of the π-acceptor properties of CO and fluoroalkyl ligands, is made using an approach based on Density Functional Theory (DFT) and Natural Bond Orbital analyses.Key words: iridium, fluoroalkyl, oxidation, carbonyl, DFT.
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19
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Kelly ME, Wagner C, Schmidt H. Dibromidodimethyldipyridineplatinum(IV). Acta Crystallogr Sect E Struct Rep Online 2008; 64:m1385. [PMID: 21580838 PMCID: PMC2959558 DOI: 10.1107/s160053680803208x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Accepted: 10/06/2008] [Indexed: 11/10/2022]
Abstract
In the title complex, [PtBr2(CH3)2(C5H5N)2], the PtIV metal centre lies on a twofold rotation axis and adopts a slightly distorted octahedral coordination geometry. The structure displays weak intramolecular C—H⋯Br hydrogen-bonding interactions.
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20
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Kelly ME, Gómez-Ruiz S, Schmidt J, Wagner C, Schmidt H. Platinum(IV) complexes with α,ω-bis(pyrazol-1-yl) alkanediyl and diethyl ether/thioether ligands. Crystal structures of dibromodimethyl[1,2-bis(pyrazol-1-yl)ethane]platinum(IV) and trimethyl-bis[2-(pyrazol-1-yl)ethyl]etherplatinum(IV) tetrafluoroborate. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Bennett MA, Bhargava SK, Privér SH, Willis AC. Selective Cleavage by Acids of One Metal–Carbon σ‐Bond of a Bis(ortho‐platinated) Triarylphosphane: A31P NMRtrans‐Influence Series Based on the Unit Pt(κ2‐C6H3‐5‐Me‐2‐PPh2)(PPh2‐4‐tol). Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800333] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Melnick JG, Yurkerwich K, Buccella D, Sattler W, Parkin G. Molecular structures of thimerosal (Merthiolate) and other arylthiolate mercury alkyl compounds. Inorg Chem 2008; 47:6421-6. [PMID: 18533648 DOI: 10.1021/ic8005426] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The molecular structure of sodium ethylmercury thiosalicylate (also known as thimerosal and Merthiolate) and related arylthiolate mercury alkyl compounds, namely PhSHgMe and PhSHgEt, have been determined by single crystal X-ray diffraction. (1)H NMR spectroscopic studies indicate that the appearance of the (199)Hg mercury satellites of the ethyl group of thimerosal is highly dependent on the magnetic field and the viscosity of the solvent as a consequence of relaxation due to chemical shift anisotropy.
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Affiliation(s)
- Jonathan G Melnick
- Department of Chemistry, Columbia University, New York, New York 10027, USA
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23
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Affiliation(s)
- Jianguo Wu
- Department of Chemistry, University of Missouri−Columbia, Columbia, Missouri 65211
| | - Paul R. Sharp
- Department of Chemistry, University of Missouri−Columbia, Columbia, Missouri 65211
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24
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Ohashi M, Shima A, Rüffer T, Mizomoto H, Kaneda Y, Mashima K. Linear Metal−Metal-Bonded Tetranuclear M−Mo−Mo−M Complexes (M = Ir and Rh): Oxidative Metal−Metal Bond Formation in a Tetrametallic System and 1,4-Addition Reaction of Alkyl Halides. Inorg Chem 2007; 46:6702-14. [PMID: 17608413 DOI: 10.1021/ic062474q] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction of Mo2(pyphos)4 (1) with [MCl(CO)2]2 (M = Ir and Rh) afforded linear tetranuclear complexes of a formula Mo2M2(CO)2(Cl)2(pyphos)4 (2, M = Ir; 3, M = Rh). X-ray diffraction studies confirmed that two "MCl(CO)" fragments are introduced into both axial sites of the Mo2 core in 1 and coordinated by two PPh2 groups in a trans fashion, thereby forming a square-planar geometry around each M(I) metal. Treatment of 2 and 3 with an excess amount of tBuNC and XylNC induced dissociation of the carbonyl and chloride ligands to yield the corresponding dicationic complexes [Mo2M2(pyphos)4(tBuNC)4](Cl)2 (5a, M = Ir; 6a, M = Rh) and [Mo2M2(pyphos)4(XylNC)4](Cl)2 (7, M = Ir; 8, M = Rh). Their molecular structures were characterized by spectroscopic data as well as X-ray diffraction studies of BPh4 derivatives [Mo2M2(pyphos)4(tBuNC)4](BPh4)2 (5b, M = Ir; 6c, M = Rh), which confirmed that there is no direct sigma-bonding interaction between the M(I) atom and the Mo2 core. The M(I) atom in 5 and 6 can be oxidized by either 2 equiv of [Cp2Fe][PF6] or an equimolar amount of I2 to afford Mo(II)2M(II)2 complexes, [Mo2M2(X)2(tBuNC)4(pyphos)4]2+ in which two Mo-M(II) single bonds are formed and the bond order of the Mo-Mo moiety has been decreased to three. The Ir(I) complex 5a reacted not only with methyl iodide but also with dichloromethane to afford the 1,4-oxidative addition products [Mo2Ir2(CH3)(I)(tBuNC)4(pyphos)4](Cl)2 (13) and [Mo2Ir2(CH2Cl)(Cl)(tBuNC)4(pyphos)4](Cl)2 (15), respectively, although the corresponding reactions using the Rh(I) analogue 6 did not proceed. Kinetic analysis of the reaction with CH3I suggested that the 1,4-oxidative addition to the Ir(I) complex occurs in an SN2 reaction mechanism.
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Affiliation(s)
- Masato Ohashi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
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25
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Butikofer JL, Parson TG, Roddick DM. Adduct Studies and Reactivity of trans-[(C2F5)2MeP]2Pt(Me)X (X = O2CCF3, OTF, OSO2F). Organometallics 2006. [DOI: 10.1021/om060847p] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeffrey L. Butikofer
- Department of Chemistry, Box 3838, University of Wyoming, Laramie, Wyoming 82071
| | - Thomas G. Parson
- Department of Chemistry, Box 3838, University of Wyoming, Laramie, Wyoming 82071
| | - Dean M. Roddick
- Department of Chemistry, Box 3838, University of Wyoming, Laramie, Wyoming 82071
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Panda M, Das S, Mostafa G, Castineiras A, Goswami S. Platinum complexes of diazo ligands. Studies of regioselective aromatic ring amination, oxidative halogen addition and reductive halogen elimination reactions. Dalton Trans 2005:1249-55. [PMID: 15782261 DOI: 10.1039/b418470j] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2-(Arylazo)pyridine ligands, L1a-1c react with the salt K2[PtCl4] to give the mononuclear complexes [PtCl2(L1)](1), which readily react with ArNH2 to yield the monochloro complexes of type [PtCl(L2)](HL2= 2-[(2-(arylamino)phenyl)azo]pyridine)(2) via regioselective ortho-amine fusion at the pendent aryl ring of coordinated L1. Oxidative addition of the electrophiles Y2(Y = Cl, Br, I) to the square-planar platinum(II) complex, has led to syntheses of the corresponding octahedral platinum(IV) complexes, [PtY3(L2)](3) in high yields. Ascorbate ion reductions of the platinum(IV) complexes, , resulted in reductive halogen elimination to revert to the platinum(II) complexes almost quantitatively. Isolation of products and X-ray structure determination of the representative complexes followed all these chemical reactions. In crystal packing, the compound [PtCl2(L1c)](1c) forms dimeric units with a Pt...Pt distance of 3.699(1) A. In contrast, the crystal packing of 2b revealed that the molecules are arranged in an antiparallel fashion to form a noncovalent 1D chain to accommodate pi(aryl)-pi(pyridyl) and Pt-pi(aryl) interactions. Notably, the oxidation of [Pt(II)Cl(L2a)](2a) by I2 produced a mixed halide complex [Pt(IV)ClI2(L2a)](5), which, in turn, is reduced by ascorbate ion to produce [Pt(II)I(L2a)] with the elimination of ClI. All the platinum(II) complexes are brown, the platinum(IV) complexes, on the other hand, are green. Low-energy visible range transitions in the complexes of the extended ligand [L2]- are ascribed to ligand basedpi-pi* transitions. Cyclic voltammetric behaviour of the complexes is reported.
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Affiliation(s)
- Manashi Panda
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata, 700 032, India
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Westra AN, Bourne SA, Koch KR. First metallamacrocyclic complexes of Pt(iv) with 3,3,3′,3′-tetraalkyl-1,1′-phenylenedicarbonylbis(thioureas): synthesis by direct or electrolytic oxidative addition of I2, Br2 and Cl2. Dalton Trans 2005:2916-24. [PMID: 16094481 DOI: 10.1039/b507188g] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elemental I(2) and Br(2) cleanly react with the 3:3 Pt(ii) metallamacrocycle of 3,3,3',3'-tetra(n-butyl)-1,1'-terephthaloylbis(thiourea)(cis-[Pt(II)(3)(L(p)(1)-S,O)(3)]3), in chloroform at room temperature, to yield oxidative addition products; (195)Pt NMR studies reveal that a stepwise oxidative addition readily occurs to each of the Pt(ii) centres in the metallamacrocycle to yield the mixed valence species cis-[Pt(II)(2)Pt(IV)I(2)(L(p)(1)-S,O)(3)] and cis-[Pt(II)Pt(IV)(2)I(4)(L(p)(1)-S,O)(3)], and the fully oxidised cis-[Pt(IV)(3)I(6)(L(p)(1)-S,O)(3)] in solution, depending on the mole ratio I(2):3. Similar results are obtained on treatment of solutions of 3 with elemental Br(2). Treatment of the corresponding 2:2 Pt(ii) complex of 3,3,3',3'-tetraethyl-1,1'-isophthaloylbis(thiourea)(cis-[Pt(II)(2)(L(m)(1)-S,O)(2)]4) with iodine, results in facile oxidative addition to yield cis-[Pt(IV)(2)(L(m)(1)-S,O)(2)I(4)], with a trans-Pt(iv)-iodo arrangement. Molecules in the crystal structure of 5 have their trans-Pt(iv)-iodo axes essentially aligned, with very close intermolecular iodide contacts (3.775(1)A), resulting in chains of weakly bound metallamacrocycles in the solid. An alternative electrolytic synthesis method, using a simple two-compartment glass cell containing 4 and a chosen halide salt in dichloromethane, led to the formation of cis-[Pt(IV)(2)(L(m)(1)-S,O)(2)Br(4)] 6 and cis-[Pt(IV)(2)(L(m)(1)-S,O)(2)Cl(4)] 7, completing characterization of a series of first-reported trans-Pt(iv)-X (X=I, Br, Cl) metallamacrocyclic complexes.
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Affiliation(s)
- Arjan N Westra
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa.
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Foley SR, Shen H, Qadeer UA, Jordan RF. Generation and Insertion Reactivity of Cationic Palladium Complexes That Contain Halogenated Alkyl Ligands. Organometallics 2003. [DOI: 10.1021/om034211z] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen R. Foley
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Han Shen
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Umair A. Qadeer
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Richard F. Jordan
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
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Hughes RP, Ward AJ, Rheingold AL, Zakharov LN. Synthesis and molecular structures of platinum(II) and platinum(IV) diimine complexes possessing fluoroalkyl ligands. CAN J CHEM 2003. [DOI: 10.1139/v03-117] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A range of Pt-diimine complexes possessing fluoroalkyl and hydrofluoroalkyl ligands were synthesized from the readily prepared [Pt(diimine)Me2] complexes and the appropriate iodofluoroalkane. For complexes with diimine ligands containing substituents in the 2,6-positions of the aryl group, Pt(II) complexes were obtained due to in situ reductive elimination of MeI, while for complexes with diimine ligands of smaller steric demands (possessing substituents in the 3,5-positions or the 4-position), Pt(IV) complexes were obtained. Attempts to convert the Pt(IV) complexes to the desired Pt(II) species via reductive elimination of MeI, methane, or ethane resulted in either no reaction or degradation of the starting complex. Fluoroalkyl(methyl)platinum(II) complexes were then converted to the fluoroalkyliodoplatinum(II) complexes via addition of I2 or by reaction with aq HI. Several complexes have been characterized crystallographically.Key words: fluoroalkyl, organometallic synthesis, structure, platinum.
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Stockland RA, Foley SR, Jordan RF. Reaction of vinyl chloride with group 4 metal olefin polymerization catalysts. J Am Chem Soc 2003; 125:796-809. [PMID: 12526681 DOI: 10.1021/ja028530d] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of three types of group 4 metal olefin polymerization catalysts, (C(5)R(5))(2)ZrX(2)/activator, (C(5)Me(5))TiX(3)/MAO (MAO = methylalumoxane), and (C(5)Me(4)SiMe(2)N(t)Bu)MX(2)/activator (M = Ti, Zr), with vinyl chloride (VC) and VC/propylene mixtures have been investigated. Two general pathways are observed: (i) radical polymerization of VC initiated by radicals derived from the catalyst and (ii) net 1,2 VC insertion into L(n)MR(+) species followed by beta-Cl elimination. rac-(EBI)ZrMe(mu-Me)B(C(6)F(5))(3) (EBI = 1,2-ethylenebis(indenyl)) reacts with 2 equiv of VC to yield oligopropylene, rac-(EBI)ZrCl(2), and B(C(6)F(5))(3). This reaction proceeds by net 1,2 VC insertion into rac-(EBI)ZrMe(+) followed by fast beta-Cl elimination to yield [rac-(EBI)ZrCl][MeB(C(6)F(5))(3)] and propylene. Methylation of rac-(EBI)ZrCl(+) by MeB(C(6)F(5))(3)(-) enables a second VC insertion/beta-Cl elimination to occur. The evolved propylene is oligomerized by rac-(EBI)ZrR(+) as it is formed. At high Al/Zr ratios, rac-(EBI)ZrMe(2)/MAO catalytically converts VC to oligopropylene by 1,2 VC insertion into rac-(EBI)ZrMe(+), beta-Cl elimination, and realkylation of rac-(EBI)ZrCl(+) by MAO; this process is stoichiometric in Al-Me groups. The evolved propylene is oligomerized by rac-(EBI)ZrR(+). Oligopropylene end group analysis shows that the predominant chain transfer mechanism is VC insertion/beta-Cl elimination/realkylation. In the presence of trace levels of O(2), rac-(EBI)ZrMe(2)/MAO polymerizes VC to poly(vinyl chloride) (PVC) by a radical mechanism initiated by radicals generated by autoxidation of Zr-R and/or Al-R species. CpTiX(3)/MAO (Cp = C(5)Me(5); X = OMe, Cl) initiates radical polymerization of VC in CH(2)Cl(2) solvent at low Al/Ti ratios under anaerobic conditions; in this case, the source of initiating radicals is unknown. Radical VC polymerization can be identified by the presence of terminal and internal allylic chloride units and other "radical defects" in the PVC which arise from the characteristic chemistry of PCH(2)CHCl(*) macroradicals. However, this test must be used with caution, since the defect units can be consumed by postpolymerization reactions with MAO. (C(5)Me(4)SiMe(2)N(t)Bu)MMe(2)/[Ph(3)C]][B(C(6)F(5))(4)] catalysts (M = Ti, Zr) react with VC by net 1,2 insertion/beta-Cl elimination, yielding [(C(5)Me(4)SiMe(2)N(t)Bu)MCl][B(C(6)F(5))(4)] species which can be trapped as (C(5)Me(4)SiMe(2)N(t)Bu)MCl(2) by addition of a chloride source. The reaction of rac-(EBI)ZrMe(2)/MAO or [(C(5)Me(4)SiMe(2)N(t)Bu)ZrMe][B(C(6)F(5))(4)] with propylene/VC mixtures yields polypropylene containing both allylic and vinylidene unsaturated chain ends rather than strictly vinylidene chain ends, as observed in propylene homopolymerization. These results show that the VC insertion of L(n)M(CH(2)CHMe)(n)R(+) species is also followed by beta-Cl elimination, which terminates chain growth and precludes propylene/VC copolymerization. Termination of chain growth by beta-Cl elimination is the most significant obstacle to metal-catalyzed insertion polymerization/copolymerization of VC.
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Affiliation(s)
- Robert A Stockland
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Illinois 60637, USA
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Kraatz HB, van der Boom ME, Ben-David Y, Milstein D. Reaction of Aryl Iodides with (PCP)Pd(II)-Alkyl and Aryl Complexes: Mechanistic Aspects of Carbon-Carbon Bond Formation. Isr J Chem 2001. [DOI: 10.1560/v0q8-t3xm-n68w-d8nl] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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