Mononuclear Platinum(II) Complexes Incorporating κ2-Carboxylate Ligands: Synthesis, Structure, and Reactivity

被引:13
作者
Moret, Marc-Etienne [1 ]
Keller, Sebastian F. [1 ]
Slootweg, J. Chris [1 ]
Chen, Peter [1 ]
机构
[1] ETH, Organ Chem Lab, CH-8093 Zurich, Switzerland
关键词
H BOND ACTIVATION; CYCLOMETALATED PLATINUM(II); CARBOXYLATE COMPLEXES; CH ACTIVATION; PALLADIUM(II); CHEMISTRY; CATALYSTS; PALLADACYCLES; OLEFINS;
D O I
10.1021/ic900677c
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The chloro-bridged dimer [(PC)Pt(mu-Cl)(2) (PC = [((Bu2P)-Bu-t-o-C6H4)-CMe2](-)) reacts with silver(I) acetate to yield the monomeric kappa(2)-acetate complex ((PC)Pt(kappa(2)-OOCMe)]. Its trifluoroacetate analogue exists in solution as a mixture of the monomer and two isomeric dimers, and crystallizes as the approximately C-2-symmetrical dimer [(PC)Pt(mu-OOCCF3)](2). NMR experiments and density functional theory calculations show that the monomeric species are favored by bulky ligands and electron-rich carboxylates. [(PC)Pt(OOCCF3)] undergoes a ligand-dehydrogenation reaction in hot trifluoroacetic acid to yield [(PCC)Pt(OOCCF3)(2)] (PCC = ((BU2P)-B-t-o-C6H4)-C(Me)=CH2).
引用
收藏
页码:6972 / 6978
页数:7
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