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Brunecker C, Arrowsmith M, Müssig JH, Böhnke J, Stoy A, Heß M, Hofmann A, Lenczyk C, Lichtenberg C, Ramler J, Rempel A, Braunschweig H. Synthesis and characterisation of boranediyl- and diboranediyl-bridged diplatinum A-frame complexes. Dalton Trans 2021; 50:3506-3515. [PMID: 33442715 DOI: 10.1039/d0dt03855e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of boranediyl-bridged diplatinum A-frame complexes, [Pt2X2(μ-BY)(μ-dmpm)2] (X = Cl, Br, I; Y = aryl, alkyl, amino, halo; dmpm = bis(dimethylphosphino)methane), were synthesised by the twofold oxidative addition of BX2Y to [Pt2(nbe)2(μ-dmpm)2] (nbe = norbornene) or to the paddlewheel complex [Pt2(μ-dmpm)3]. Similarly, the addition of B2X2(NMe2)2 (X = Cl, Br) to [Pt2(nbe)2(μ-dmpm)2] provided access to the diborane-1,2-diyl-bridged A-frame complexes [Pt2X2(μ-1,2-B2(NMe2)2)(μ-dmpm)2]. X-ray crystallographic studies of these (BY)n-bridged complexes show structural trends depending on the steric demands of Y and the nature of X. Analysis of higher-order 31P NMR satellites provided information on JP-Pt and JPt-Pt coupling constants, the latter correlating with the PtPt distance. All (di)boranediyl complexes also proved unstable towards (successive) loss of the bridging "BY" unit(s), resulting in the formation of [Pt2X2(μ-dmpm)2].
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Affiliation(s)
- Carina Brunecker
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Merle Arrowsmith
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Jonas H Müssig
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Julian Böhnke
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Andreas Stoy
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Merlin Heß
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Alexander Hofmann
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Carsten Lenczyk
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Crispin Lichtenberg
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Jacqueline Ramler
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Anna Rempel
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Holger Braunschweig
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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Neugebauer M, Schmitz S, Brünink D, Doltsinis NL, Klein A. Dynamics of the efficient cyclometalation of the undercoordinated organoplatinum complex [Pt(COD)(neoPh)] + (neoPh = 2-methyl-2-phenylpropyl). NEW J CHEM 2020. [DOI: 10.1039/d0nj04811a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The cyclometalation reaction of [Pt(COD)(κ1-neoPh)]+ (neoPh = 2-methyl-2-phenylpropyl) to [Pt(COD)(κ2-neoPh)] was studied experimentally and mechanistically using DFT and MD simulations.
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Affiliation(s)
- Michael Neugebauer
- University of Cologne
- Department of Chemistry
- Institute for Inorganic Chemistry
- D-50939 Cologne
- Germany
| | - Simon Schmitz
- University of Cologne
- Department of Chemistry
- Institute for Inorganic Chemistry
- D-50939 Cologne
- Germany
| | - Dana Brünink
- Westfälische Wilhelms-Universität Münster
- Institut für Festkörpertheorie and Center for Multiscale Theory and Computation
- 48149 Münster
- Germany
| | - Nikos L. Doltsinis
- Westfälische Wilhelms-Universität Münster
- Institut für Festkörpertheorie and Center for Multiscale Theory and Computation
- 48149 Münster
- Germany
| | - Axel Klein
- University of Cologne
- Department of Chemistry
- Institute for Inorganic Chemistry
- D-50939 Cologne
- Germany
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3
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Neugebauer M, Schmitz S, Krause M, L. Doltsinis N, Klein A. Reactions of the organoplatinum complex [Pt(cod) (neoSi)Cl] (neoSi = trimethylsilylmethyl) with the non-coordinating anions SbF6– and BPh4–. OPEN CHEM 2018. [DOI: 10.1515/chem-2018-0130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractReactions of the organoplatinum complex [Pt(cod)(neoSi)Cl] (neoSi = (trimethylsilylmethyl) with the Ag(I) salts of oxo or fluoride containing anions A– = NO3–, ClO4–, OTf – (trifluoromethanesulfonate) and SbF6– lead to the desired abstraction of the chlorido ligand and precipitation of AgCl. However, further reaction of the resulting Pt complexes [Pt(cod)(neoSi) (solvent)]+ with diverse N-heterocyclic ligands L such as pyridines, caffeine, and guanine did not yield the targeted complexes [Pt(cod)(neoSi)(L)](A) in most of the cases, but to extensive decomposition yielding [Pt(cod)(Me) (solvent)]+, thus transforming the neoSi into a methyl ligand. A detailed study on the reaction with SbF6– combining DFT calculations with NMR and MS revealed that Pt catalysed decomposition of SbF6‒ and fluorination of the neoSi silicon atom leading to FSiMe3. When reacting the parent complex with Ag(BPh4), the arylated derivative [Pt(cod)(neoSi)(Ph)] was obtained and characterised by multinuclear NMR, MS and single crystal XRD.
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Affiliation(s)
- Michael Neugebauer
- Universität zu Köln, Department für Chemie, Institut für Anorganische Chemie Greinstraße 6, D-50939Köln, Germany
| | - Simon Schmitz
- Universität zu Köln, Department für Chemie, Institut für Anorganische Chemie Greinstraße 6, D-50939Köln, Germany
| | - Maren Krause
- Universität zu Köln, Department für Chemie, Institut für Anorganische Chemie Greinstraße 6, D-50939Köln, Germany
| | - Nikos L. Doltsinis
- Westfälische Wilhelms-Universität Münster, Institut für Festkörpertheorie and Center for Multiscale Theory and Computation, Wilhelm-Klemm-Straße 10, 48149Münster, Germany
| | - Axel Klein
- Universität zu Köln, Department für Chemie, Institut für Anorganische Chemie Greinstraße 6, D-50939Köln, Germany
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Lam WH, Yam VWW. Computational Studies on the Photophysical Properties and NMR Fluxionality of Dinuclear Platinum(II) A-Frame Alkynyl Diphosphine Complexes. Inorg Chem 2010; 49:10930-9. [DOI: 10.1021/ic101271d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wai Han Lam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
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Klein A, Lüning A, Ott I, Hamel L, Neugebauer M, Butsch K, Lingen V, Heinrich F, Elmas S. Organometallic palladium and platinum complexes with strongly donating alkyl coligands – Synthesis, structures, chemical and cytotoxic properties. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.04.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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Albrecht C, Wagner C, Steinborn D. Zur Reaktivität von dinuklearen Platina-β-diketonen gegenüber Phosphanen: Diacetylplatin(II)-Komplexe und mononukleare Platina-β-diketone. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800317] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Casas JM, Diosdado BE, Forniés J, Martín A, Rueda AJ, Orpen AG. Synthesis of Binuclear Platinum Complexes Containing the Ligands 8-Naphthyridine, 2-Aminopyridine, and 7-Azaindolate. An Experimental Study of the Steric Hindrance of the Bulky Pentafluorophenyl Ligands in the Synthesis of Binuclear Complexes. Inorg Chem 2008; 47:8767-75. [DOI: 10.1021/ic8006475] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- José M. Casas
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain, and School of Chemistry, University of Bristol, Bristol, U. K. BS8 1TS, U.K
| | - Beatriz E. Diosdado
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain, and School of Chemistry, University of Bristol, Bristol, U. K. BS8 1TS, U.K
| | - Juan Forniés
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain, and School of Chemistry, University of Bristol, Bristol, U. K. BS8 1TS, U.K
| | - Antonio Martín
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain, and School of Chemistry, University of Bristol, Bristol, U. K. BS8 1TS, U.K
| | - Angel J. Rueda
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain, and School of Chemistry, University of Bristol, Bristol, U. K. BS8 1TS, U.K
| | - A. Guy Orpen
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain, and School of Chemistry, University of Bristol, Bristol, U. K. BS8 1TS, U.K
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8
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Pan QJ, Zhang HX, Zhou X, Fu HG, Yu HT. Electronic Structures and Spectroscopic Properties of Mono- and Binuclear d8 Complexes: A Theoretical Exploration on Promising Phosphorescent Materials. J Phys Chem A 2006; 111:287-94. [PMID: 17214466 DOI: 10.1021/jp065183b] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The structures of trans-[M(2)(CN)(4)(PH(2)CH(2)PH(2))(2)] (M = Pt (1), Pd (2), and Ni (3)), trans-[Pt(2)X(4)(PH(2)CH(2)PH(2))(2)] (X = Cl (4) and Br (5)), and trans-[M(CN)(2)(PH(3))(2)] (M = Pt (6), Pd (7), and Ni (8)) in the ground state were optimized using the MP2 method. Frequency calculations reveal that the weak metal-metal interaction is essentially attractive for 1, 2, 4, and 5 but not for 3. The TD-DFT calculations associated with the polarized continuum model (PCM) were performed to predict absorption spectra in CH(2)Cl(2) solution. Experimental spectra are well reproduced by our results. With respect to analogous mononuclear d(8) complexes (6-8), a large red shift of the absorption wavelength was calculated for the binuclear d(8) complexes (1-3). Relative to 1 with unsaturated CN- donors, introduction of saturated halogen donors into 4 and 5 changes their electronic structures, especially the HOMO and LUMO. The TD-DFT and subsequent unrestricted MP2 calculations predict that 1 produces the lowest-energy d --> p emission while 2-5 favor the d --> d emissions, agreeing with experimental observations.
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Affiliation(s)
- Qing-Jiang Pan
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
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9
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Nair P, White CP, Anderson GK, Rath NP. Unsymmetrical complexes containing the linear tetraphosphine ligand DPPEPM. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.09.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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11
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Jones ND, Foo SJL, Patrick BO, James BR. Metal−Metal Bonded Homo- and Heterobimetallic Compounds of Pt(I) and Pd(I) Supported by a Bridging-N,P:N‘,P‘ Moiety of a Potentially Hexadentate Ligand. Inorg Chem 2004; 43:4056-63. [PMID: 15206888 DOI: 10.1021/ic040019t] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reactions of metal-metal bonded homobimetallic (Pd(2)) and heterobimetallic (PtPd) complexes, supported by a P,P'-bridging-bis(P,N-chelating) coordination mode of the potentially hexadentate ligand 1,1-bis[di(o-N,N-dimethylanilinyl)phosphino]methane (dmapm), with CO, diethylacetylenedicarboxylate (DEAD), and thiols (RSH) in CH(2)Cl(2) are described. At room temperature, rac-Pd(2)Cl(2)(mu-N,P:P',N'-dmapm) gives the stable complexes Pd(2)Cl(2)(mu-CO)(2)(mu-P:P'-dmapm) and PdCl(eta2-DEAD)(mu-P:P',N-dmapm)PdCl (which is fluxional in solution), while rac-PtPdCl(2)(mu-N,P:P',N'-dmapm) disproportionates to PtCl(2)(P,P'-dmapm) and Pd metal, although at low temperature intermediate carbonyl species are detected in the CO reaction. The reactions with thiols in the presence of triflic acid (HOTf) generate rac-[MPdCl(2)(mu-SR)(mu-N,P:P',N'-dmapm)][OTf] and H(2) for both M = Pt and Pd. In CH(2)Cl(2), PdX(2)(dmapm) species (X = halide or CN) exist as equilibrium mixtures of P,P'- and P,N-ligated forms. For X = Cl, the P,P'-P,N equilibrium is governed by DeltaH degrees = -5.5 +/- 0.5 kJ mol(-1) and DeltaS degrees = 10 +/- 1 J mol(-1) K(-1), and the ring-strain energy within the P,P'-isomer is approximately 32 kJ mol(-1); the equilibrium increasingly favors the P,N-form with X = CN >> I > Br > Cl. The solid-state structures of rac-[PtPdCl(2)(mu-SEt)(mu-N,P:P',N'-dmapm)][OTf] and PdCl(2)(P,N-dmapm) are presented; the latter contains both bound and free N- and P-atoms of identical types in the same molecule and permits an assessment of sigma- and pi-bonding between these atoms and Pd.
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Affiliation(s)
- Nathan D Jones
- Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
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12
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Volkov O, Macías R, Rath NP, Barton L. Organometallic chemistry on rhodaheteroborane clusters: reactions with bidentate phosphines and organotransition metal reagents. Appl Organomet Chem 2003. [DOI: 10.1002/aoc.448] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Nair P, Anderson GK, Rath NP. Palladium and Platinum Complexes Containing the Linear Tetraphosphine Bis[((diphenylphosphino)ethyl)phenylphosphino]methane. Organometallics 2003. [DOI: 10.1021/om0209069] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Padma Nair
- Department of Chemistry and Biochemistry, University of MissouriSt. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
| | - Gordon K. Anderson
- Department of Chemistry and Biochemistry, University of MissouriSt. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
| | - Nigam P. Rath
- Department of Chemistry and Biochemistry, University of MissouriSt. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121
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14
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Vicente J, Arcas A, Bautista D, Ramı́rez de Arellano M. Mono- and di-nuclear complexes of ortho-palladated and -platinated 4,4′-dimethylazobenzene with bis(diphenylphosphino)methane. More data on transphobia. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01729-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Nair P, Anderson GK, Rath NP. Bimetallic platinum complexes containing linear tetraphosphine ligands. INORG CHEM COMMUN 2002. [DOI: 10.1016/s1387-7003(02)00516-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Tsukada N, Tamura O, Inoue Y. Synthesis and Structures of Palladium and Platinum A-Frame Complexes Bridged by a Novel Binucleating Ligand, N,N‘-Bis[(2-diphenylphosphino)phenyl]- formamidine. Organometallics 2002. [DOI: 10.1021/om020003f] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naofumi Tsukada
- Department of Materials Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Osamu Tamura
- Department of Materials Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Yoshio Inoue
- Department of Materials Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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Grushin VV. Synthesis of Hemilabile Phosphine−Phosphine Oxide Ligands via the Highly Selective Pd-Catalyzed Mono-oxidation of Bidentate Phosphines: Scope, Limitations, and Mechanism. Organometallics 2001. [DOI: 10.1021/om010454k] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vladimir V. Grushin
- Department of Chemistry, Wilfrid Laurier University, Waterloo, Ontario, N2L 3C5, Canada
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