Synthese und Kristallstruktur des ionischen Tellurnitridchlorids [Te3N2Cl5(SbCl5)]+SbCl6−

Synthesis and Crystal Structure of the Ionic Tellurium Nitride Chloride[Te₃N₂Cl₅(SbCl₅)]⁺SbCl₆^? The title compound has been prepared by the reaction of Te₂NCl₅ with antimony pentachloride in CH₂Cl₂ suspension. It is characterized by IR spectroscopy and by a crystal structure determination. Space group P2₁/c, Z = 4, lattice dimensions at ?70°C: a = 1535.6, b = 1259.5, c = 1572.4 pm, β = 109.30°, R = 0.031. The compound forms an ionic pair with the central group of a (TeNCl)₂ molecule in which the tellurium atoms are linked by the nitrogen atoms to give a planar Te₂N₂ four-membered ring. One of the nitrogen atoms is coordinated by a TeCl₃⁺ unit, the other one by an antimony pentachloride molecule. According to the IR spectra a structure like [Te₂N₂Cl₂(TeCl₄)₂] is proposed for Te₂NCl₅.