Acylthio- and Thioacylthiophosphines [(RCES)<sub><b><i>n</i></b></sub>PPh<sub>3-<b><i>n</i></b></sub>, E = O, S;<b><i>n</i></b>= 1—3]: Synthesis and Structural Analysis
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...