Cationic Phosphenium Complexes of Group 6 Transition Metals. Systematic Approach to Elucidation of Influence of Substituents of the Phosphenium Phosphorus on the Stability of the Complexes
作者:Yoshitaka Yamaguchi、Hiroshi Nakazawa、Tomonori Itoh、Katsuhiko Miyoshi
DOI:10.1246/bcsj.69.983
日期:1996.4
OMe)}] (M = Cr, Mo, and W; XY = (NEt2)2, 1a; N(Me)CH2CH2O, 2a; (NEt2)(OMe), 3a; OCMe2CMe2O, 4a; (OMe)2, 5a) have been prepared and subjected to the reaction with BF3·OEt2. In these reactions, cationic phosphenium complexes [(bpy)(CO)3MPXY}]+ are formed by an OMe abstraction as an anion from the phosphorus ligand for 1a, 2a, and 3a (M = Mo, W). The reaction of 3a (M = Cr) yields fac-[(bpy)(CO)3CrP(OMe)2F}]
第 6 族过渡金属亚磷酸酯络合物,fac-[(bpy)(CO)3MPXY(OMe)}](M = Cr、Mo 和 W;XY = (NEt2)2, 1a;N(Me)CH2CH2O, 2a; (NEt2)(OMe), 3a; OCMe2CMe2O, 4a; (OMe)2, 5a) 已制备并与 BF3·OEt2 反应。在这些反应中,阳离子鏻络合物 [(bpy)(CO)3MPXY}]+ 是通过 OMe 提取形成的,作为来自 1a、2a 和 3a 的磷配体的阴离子(M = Mo,W)。3a (M = Cr) 的反应生成 fac-[(bpy)(CO)3CrP(OMe)2F}] (Cr-5c) 和 [(bpy)(CO)3CrP(NEt2)F2}] (Cr-7d)。在 4a 和 5a 对所有第 6 组同系物的反应中,发生 OMe/F 取代反应生成 fac-[(bpy)(CO)3MP(OMe)2F}