Preparation and properties of dinitrogen trimethylphosphine complexes of molybdenum and tungsten—II
作者:Ernesto Carmona、José M. Marín、Manuel L. Poveda、Jerry L. Atwood、Robin D. Rogers
DOI:10.1016/s0277-5387(00)83957-1
日期:1983.1
tetragonal space group I2 trans-[MoCl(N2)(PMe3)4] has a = 9.597(5), b = 12.294(6) Å, Dc = 1.36g cm−3 Z = 2 and was refined to a final R value of 0.021 based on 319 independent observed reflections. The tungsten analogue has a = 9.573(4), b = 12.278(5) Å, Dc = 1.63g cm−3 for Z = 2 and was refined to R = 0.19 with 322 independent observed reflections. trans-[MoCl2(PMe3)4] has cell parameters a = 9.675(5),
在二氮气氛下,在四氢呋喃中将配合物[MCl 3(PMe 3)3 ](M = Mo,W)的钠汞齐还原,得到深红棕色悬浮液,其成分为红色橙色晶体反式为-[MCl(N 2) ·(PMe 3)4 ]可被收集。光谱和化学证据表明这些化合物最好配制成的混合物,反式- [M(N 2)2(PME 3)4 ]和反- [的MC1 2(PME 3)4 ]种类,但尝试以分离纯的双(已证明二硝基衍生物是不成功的。已通过X射线晶体学研究了分析成分为[MCl(N 2)(PMe 3)4 ]的单晶,并已研究了反式-[ MoCl 2(PMe 3)4 ]的结构。用于比较的确定。反式- [的MC1(N 2)(PME 3)4 ](M =钼,钨)和反式- [代替MoCl 2(PME 3)4 ]均为同构,正方晶空间群结晶我2反-[MoCl(N 2)(PMe3)4 ]具有a = 9.597(5),b = 12.294(6),D c = 1