Formation of a novel delocalised diphosphazene upon complexation. The preparation and X-ray structure of Pd2Cl4[(CF3)2PNPPh3]2

Abstract

Reaction of (CF₃)₂P–NPPh₃(L) with PdCl₂ in dichloromethane gives Pd₂Cl₄[(CF₃)₂PNPPh₃]₂, 1 in which L has been shown from spectroscopic and X-ray crystallographic analyses to assume an uncharged non-linear electronic structure [Ph₃PNP(CF₃)₂], where the P–N and N–P bonds are equidistant and the PNP segment is highly delocalised.