Pt(II) complexes with diimine and chelating 5-ring iminocarbene ligands: synthesis, characterization, and structural and spectroscopic trends
作者： Kjetil Andreas Netland , Alexander Krivokapic , Mats Tilset
DOI: 10.1080/00958972.2010.505648
关键词: Medicinal chemistry 、 Ligand 、 Substituent 、 Chemistry 、 Carbene 、 Diimine 、 Imine 、 Moiety 、 Trans effect 、 Photochemistry 、 Protonolysis
摘要: A series of new L2PtMe2 and L2PtPh2 complexes have been prepared, where L2 = chelating diimine or NHC iminocarbene ligands with similar substituent patterns. These investigated by 1H- 13C-NMR spectroscopy single-crystal X-ray structure determinations to assess differences between the two ligand systems. All three approaches underscore strong trans influence N-heterocyclic carbene moiety relative imine group. This is supported trends in J(195Pt–H) J(195Pt–C) coupling constants hydrocarbyl NMR resonances as well Pt–ligand bond distances moieties. paralleled a clear effect protonolysis; treatment Pt(II) dimethyl diphenyl acid causes elimination methane benzene, respectively, selective loss methyl phenyl groups from position part ligand.
sci-hub.se 参考文章(38)
Fred Basolo, Ralph G. Pearson, The Trans
Effect in Metal Complexes Progress in Inorganic Chemistry. pp. 381- 453 ,(2007) , 10.1002/9780470166055.CH6
Morten Frøseth, Ajaib Dhindsa, Hilde Røise, Mats Tilset, Synthesis and characterization of palladium(II) complexes with a novel chelating iminocarbene ligand Dalton Transactions. pp. 4516- 4524 ,(2003) , 10.1039/B308275J
Kaiyuan Yang, Rene J. Lachicotte, Richard Eisenberg, DIMETHYL AND CATIONIC 1,4-DIAZABUTADIENE COMPLEXES OF PLATINUM(II) Organometallics. ,vol. 17, pp. 5102- 5113 ,(1998) , 10.1021/OM980551M
Gordon W. Bushnell, Alan Pidcock, Martin A. R. Smith, cis- and trans-Influences in platinum(II) complexes. X-Ray crystal structure analysis of tetraethylammonium trichloro(triethylphosphine)-platinate(II) Journal of the Chemical Society, Dalton Transactions. pp. 572- 575 ,(1975) , 10.1039/DT9750000572
Evelina Colacino, Jean Martinez, Frédéric Lamaty, Preparation of NHC–ruthenium complexes and their catalytic activity in metathesis reaction Coordination Chemistry Reviews. ,vol. 251, pp. 726- 764 ,(2007) , 10.1016/J.CCR.2006.07.017
John D. Scott, Richard J. Puddephatt, Ligand dissociation as a preliminary step in methyl-for-halogen exchange reactions of platinum(II) complexes Organometallics. ,vol. 2, pp. 1643- 1648 ,(1983) , 10.1021/OM50005A028
Norio. Miyaura, Akira. Suzuki, Palladium-catalyzed cross-coupling reactions of organoboron compounds Chemical Reviews. ,vol. 95, pp. 2457- 2483 ,(1995) , 10.1021/CR00039A007
Lars Johansson, Olav B. Ryan, Christian Rømming, Mats Tilset, Redox Chemistry of Dimethylplatinum(II) Diimine Complexes. Oxidatively Induced Pt−Me Transfer between Transient Platinum(III) Cation Radicals Organometallics. ,vol. 17, pp. 3957- 3966 ,(1998) , 10.1021/OM9801498
Nasim Hadj-Bagheri, Richard J. Puddephatt, Binuclear methyplatinum and phenylplatinum complexes with bis(dimethylphosphino)methane ligands Polyhedron. ,vol. 7, pp. 2695- 2702 ,(1988) , 10.1016/S0277-5387(00)83894-2
David Tobia, Joel Baranski, Bruce Rickborn, Convenient approaches to ketals from phthalide. Monosubstituted isobenzofurans Journal of Organic Chemistry. ,vol. 54, pp. 4253- 4256 ,(1989) , 10.1021/JO00278A057