Lead Carbodiimides Related to the Mineral Bideauxite

Abstract

Solid state metathesis reactions of PbCl2 with metal carbodiimides yielded multinary lead carbodiimide chlorides APb2Cl3(CN2) (A = Li, Na, Ag). Their crystal structures strongly relate to the mineral Bideauxite [AgPb2Cl3(OH,F)2], all crystallizing in the space group Fd3m. The same crystal structure exists not only with chloride but also with bromide. Another compound obtained in this system is LiPbCl(CN2) with a crystal structure that can be considered as the result of an intercalation of LiCl into the layered structure of Pb(CN2).