The faulted structures of [WCl2(PhC2Ph)(CH2=CH2)(PMe3)2] and [WCl2(PhC2Ph)2(PMe3)2

Abstract

The crystal structures of dichloro(diphenyl-η 2 -acetylene)(η 2 -ethylene)bis(trimethylphosphine)tungsten(IV) and dichlorobis(diphenyl-η 2 -acetylene)bis(trimethylphosphine)tungsten(IV) are described. The crystal structures are unusual in that they contain stacking faults leading to disordered structures. This has necessitated constrained restrained leastsquares refinement