cis- and trans-tetracarbonyltungsten complexes (R3P)(R′3E)W(CO)4 (R3P,R′3E = i-Pr3P, Ph2-i-PrP, Ph3P, Ph2HP, (Me2n)3P, Ph(i-PrO)2P, (i-PrO)3P, (PhO)3P, Ph3As, Ph3Sb) are obtained from the chlortetracarbonyltungstates [(R3P)W-(CO)4Cl]- by several different routes. a cis—trans equilibrium is attained at 20–30°C with the trans isomer being thermodynamically more stable in nearly all cases. The cis-trans
顺式-和反式-tetracarbonyltungsten络合物(R 3 P)(R' 3 E)W(CO)4(R 3 P,R' 3 E =我-PR 3 P,博士2 -i-的PrP中,Ph 3 P, Ph 2 HP,(Me 2 n)3 P,Ph(i-PrO)2 P,(i-PrO)3 P,(PhO)3 P,Ph 3 As,Ph 3 Sb)是从四羰基
钨酸盐[[( R 3 P)W-(CO)4 Cl] -通过几种不同的途径。一个顺反在几乎所有情况下,反式异构体在热力学上都更稳定,在20–30°C时达到平衡。通过
配体交换实验表明,膦-ar和膦-
二苯乙烯复合物的顺式-反式异构化分别通过st和
锑的
配体的解离而发生。然而,双(膦)配合物在分子内异构化而没有键断裂。