Coordination Chemistry of Inversely Polarized Phosphaalkenes toward Group 10 Metal Centers
作者:Leïla Boubekeur、Louis Ricard、Pascal Le Floch、Nicolas Mézailles
DOI:10.1021/om0502943
日期:2005.8.1
cyclopalladated dimeric complexes [PdCl(κ2-P,C−CH2N(Me)CHPMes*)]2, 9 (cis isomer) and 9‘ (trans isomer). The latter was characterized by X-ray diffraction. The less hindered ligand 4 acts as bridging phosphido-like ligand with both palladium (μ-P-[PdCl2(MesPCH(NMe2))]2, 11) and platinium (μ-P-[PtCl2(MesPCH(NMe2))]2, 12). In the platinum case, the reaction of two or more equivalents of the ligand 4 gave a
一系列含有相反极化的磷烯烃(Me 2 N)(R)C PR'的钯和铂配合物(R = H,R'= Mes *,2 ; R = Me,R'= Mes *,3 ; R = H ,R'= Mes,4),已经展示了不同的空间和电子环境。配体2点的坐标在η 1种-P方式要么钯(的PdCl 2(η 1 -P)2,5)或铂(顺式-Pt(CL)2(η 1 -P)2,6 ;反式-Pt(CL )2(η 1-P)2,7)。的等摩尔反应3用Pd(COD)氯2,得到的混合物在3/1比率环钯二聚体复合物的[的PdCl(κ 2 -P,C-CH 2 N(Me)的CH机动设备*)] 2,9(顺异构体)和9 '(反式异构体)。后者通过X射线衍射表征。少受阻配体4点充当桥接膦样配体用钯(μ-P- [的PdCl 2(MESP CH(NME 2))] 2,11)和铂(μ-P- [氯铂酸2(MESP CH( NMe 2))] 2,12)