The synthesis, nuclear magnetic resonance spectra, crystal structure, and solid-state and solution conformations of tris(diphenylphosphino)ethene (tppee)
作者:Jonathan L. Bookham、William McFarlane、Ian J. Colquhoun、Mark Thornton-Pett
DOI:10.1016/0022-328x(88)80657-0
日期:1988.10
c 1855.7(2) pm, β 93.40(1)°, and Z = 8; final R = 0.0597 for 4585 observed reflections. The proton, 13C and 31P NMR parameters are reported, and the PP and PC coupling constants suggest a solution conformation that is close to that found by X-ray diffraction on the solid; that is, a close approach of the electron lone pairs of the cis-vicinal phosphorus atoms, and opposition of those on the geminal
三(二苯基膦基)乙烯(tppee)的通过添加PH的合成2 pH至2 PCCPPh 2,或通过pH的反应2的PCl的Ph 2 PCLI:CHPPh 2,和它的晶体结构进行说明。tppee的晶体是单斜晶系,空间群Ç 2 / ç与一个3553.0(4),b 1044.1(1),Ç 1855.7(2)时,β93.40(1)°,ž = 8; 对于4585个观察到的反射,最终R = 0.0597。质子13 C和31报告了P NMR参数,PP和PC偶合常数表明溶液构象接近于固体X射线衍射发现的构象。即,顺式-邻位磷原子的电子孤对与双子体磷原子上的电子孤对的接近方法。