Platinum(II) complexes of some unsymmetrical diphosphenes
作者:Keith B. Dillon、Mark A. Fox、Vernon C. Gibson、Helen P. Goodwin、Leila J. Sequeira
DOI:10.1016/j.jorganchem.2016.10.005
日期:2017.2
reaction was repeated on a larger scale, a third complex cis-[Pt(PEt3)Cl2(ArFP=PAr*)] 4 was detected in solution, with P-ArF bound to Pt. Calculations of energies and 31P NMR chemical shifts confirm that this species is expected to be the thermodynamically most stable monomeric reaction product. For comparison, we have also prepared the analogous Pt(II) complex trans-[Pt(PEt3)Cl2(Ar*P=PAr*)] 6 of the symmetrical
非对称二膦Ar * P = PAr F 1(Ar * = 2,4,6- t Bu 3 C 6 H 2,Ar F = 2,4,6-(CF 3)3 C 6 H 2)与反式-[Pt(PEt 3)Cl(μ-Cl] 2)的二聚铂(II)物种最初导致形成两种不同的单体Pt(II)络合物反式-[Pt(PEt 3)Cl 2(Ar * P = PAr F)] 2和反-[Pt(PEt 3)Cl 2(Ar F P = PAr *)] 3,其中带下划线的磷原子与Pt配位。这些可以通过31 P NMR溶液状态光谱轻松识别,但是通过柱色谱分离它们的尝试未成功。当大规模重复反应时,在溶液中检测到第三种顺式-[Pt(PEt 3)Cl 2(Ar F P = PAr *)] 4,P-Ar F结合在Pt上。能量和31的计算P NMR化学位移证实该物质有望成为热力学上最稳定的单体反应产物。为了比较,我们还制备的类似铂(II)配合物的反式-
Rabinovich, Daniel; Zelman, Ross; Parkin, Gerard, Journal of the American Chemical Society, 1992, vol. 114, # 12, p. 4611 - 4621
作者:Rabinovich, Daniel、Zelman, Ross、Parkin, Gerard
DOI:——
日期:——
Hexakis(trimethylphosphine)tungsten(0): synthesis, structure, and reactivity