Anionic Tungsten Carbonyl Complexes Containing Dithiocarboxylate, Dithiocarbamate, and Xanthate Ligands
作者:Stefan Dilsky、Wolfdieter A. Schenk
DOI:10.1515/znb-2006-0511
日期:2006.5.1
center of a slightly distorted octahedron surrounded by a symmetrically bidentate planar dithio ligand and four CO groups. Reaction with PPh3 or PMe3 at elevated temperature gave the tricarbonyl complexes Et4N[W(CO)3(PR3)(SSCX)] and in one case a ring-opened addition product, Et4N[W(CO)4(PMe3)(SC(S)OEt)]. For two of them X-ray structure determinations were carried out. A comparison of the four structures
Et4N[W(CO)5Cl] 与二硫代苯甲酸钠、乙基黄原酸盐或各种二硫代氨基甲酸盐反应得到相应的盐 Et4N[W(CO)4(SSCX)] (X = Ph, NEt2, N(H)t-Bu, NPh2, OEt) 中含有螯合键合模式的二硫配体。其中两个 (X = N(H)t-Bu, NPh2) 用 X 射线晶体学表征。钨原子位于略微扭曲的八面体的中心,被对称的双齿平面二硫配体和四个 CO 基团包围。在升高的温度下与 PPh3 或 PMe3 反应得到三羰基配合物 Et4N[W(CO)3(PR3)(SSCX)],在一种情况下得到开环加成产物 Et4N[W(CO)4(PMe3)(SC( S)OEt)]。对其中两个进行了 X 射线结构测定。