Binary Tellurium(IV) Azides: Te(N3)4 and [Te(N 3)5]-

Abstract

Very sensitive materials: Tellurium tetraazide, Te(N3) 4, was prepared directly from TeF4 and Me 3SiN3 as an extremely sensitive solid; azidation of a pentafluorotellurate(IV) anion gave the pentaazidotellurate(IV) anion. The crystal structure of the pyridinium salt [pyH][Te(N3)5] consists of [Te(N3)5]- units, considerably distorted from ideal square-pyramidal symmetry, that are linked through Te⋯N interactions (see picture).