yields. The structures of (4-CH3C6H4COS)nPPh3-n (3d: n = 1, 4d: n = 2, 5d: n = 3) and (4-CH3C6H4CS2)2PPh (7b) were analyzed by X-rays. In the thiocarboxylate derivatives 3d, 4d, and 5d, the intramolecular interactions between the carbonyl oxygen and the central phosphorus atoms are weak and the thiocarboxylato ligands act as monodentates through the sulfur atoms. Similarly, in the dithiocarboxylate derivative
碱
金属
硫代和二
硫代
羧酸盐与 Ph2PCl、PhPCl2 和 PBr3 的
化学计量反应得到相应的酰基
硫代和
硫代酰基
硫代膦 [(RCES)nPPh3-n, E = O, S; n = 1-3] 3-8 中等至良好的收益率。(4-CH3C6H4COS)nPPh3-n (3d: n = 1, 4d: n = 2, 5d: n = 3) 和 (4-CH3C6H4CS2)2PPh (7b) 的结构通过 X 射线分析。在
硫代
羧酸衍
生物 3d、4d 和 5d 中,羰基氧和中心
磷原子之间的分子内相互作用很弱,
硫代
羧酸根
配体通过
硫原子充当单齿。类似地,在二
硫代
羧酸酯衍
生物 7b 中,
硫代羰基硫和中心
磷原子之间的分子内相互作用很弱,二
硫代
羧酸根
配体作为单齿。共价
磷 -
硫和/或
磷 - 苯基同碳键几乎彼此成直角,形成一个扭曲的四面体,在顶点有未共享的电子对轨道。31P NMR谱...