通过Au(CCAr)(PPh 3)(Ar = C 6 H 5或C 6 H 4 Me-4)的金属转移作用过渡金属炔基配合物
摘要:
金(I)配合物Au(C CAr)(PPh 3)(Ar = C 6 H 5或C 6 H 4 Me-4)与各种代表性的无机和有机金属配合物MXL n(M =金属,X =卤化物,L n =支持配体)以8-11族金属为特征,以中等到良好的收率得到相应的金属-炔基络合物M(CCR)L n。反应产物已通过分光光度法进行了表征,并报道了Fe(C CC 6 H 4 Me-4)(dppe)Cp,Ru(C CC 6 H 4 Me-4)(dppe)Cp *,Ru的分子结构测定(C CC 6 ˚F 5)(η 2 -O 2)(PPH 3)的Cp *,IR(C CC 6 H ^ 4 ME-4)(η 2 -O 2)(CO)(PPH 3)2,镍( CCC 6 H 4 Me-4)(PPh 3)Cp和反式-Pt(C CAr)2 L 2(Ar = C 6 H 5,L = PPh 3 ; Ar = C 6 H 4 Me-4,L =
The syntheses and structures of mono- and di-bromovinylidenes
作者:Neil J. Brown、Mark A. Fox、Mark E. Smith、Dmitry S. Yufit、Judith A.K. Howard、Paul J. Low
DOI:10.1016/j.jorganchem.2009.08.027
日期:2009.12
Reactions of metal acetylide complexes M(C CAr)(PP)Cp' (M = Fe, Ru; Ar = C6H5, C6H4Me-4; PP = (PPh3)(2), dppe; Cp' = Cp, Cp*; not all combinations), or the analogous vinylidene, with cyanogen bromide yield monobromovinylidene complexes [MC=C(Br)Ar}(PP)Cp'](+), isolated as PF6 salts. The trimethylsilylcapped acetylides M(C CSiMe3)(PP)Cp' react with cyanogen bromide to give [M(C CBr2)(PP)Cp'](+), the first examples of metal complexes containing a terminal dihalovinylidene ligand, which can be isolated as the BF4 salts. Molecular structures of representative mono- and di-bromovinylidene complexes are reported, together with those of Ru(C CSiMe3)(PPh3)(2)Cp and Ru(C CSiMe3)(dppe)Cp*. (C) 2009 Elsevier B. V. All rights reserved.