Anionic templating in a new layered bismuth tellurium oxychloride, Bi3Te4O10Cl5

Abstract

A new layered bismuth tellurium oxychloride, Bi3Te4O10Cl5 has been synthesized by a solid-state reaction under vacuum using Bi2O3, TeO2, and TeCl4 as reagents. The structure of Bi3Te4O10Cl5 has been determined by single-crystal X-ray diffraction. Bi3Te4O10Cl5 contains two different lone pair cations, Bi3+ and Te4+ that are in asymmetric coordination environments. Bi3Te4O10Cl5 has a novel two-dimensional layered structure consisting of distorted BiO4Cl2 octahedra, BiO4Cl3 polyhedra, TeO4 polyhedra, and isolated Cl-ions. Complete structural analysis, infrared spectrum, thermogravimetric analysis, and dipole moment calculations are presented. Crystal data: Bi3Te4O10Cl5, monoclinic, space group C2/m (No. 12), a = 15.372(3) angstrom, b = 4.1004(7) angstrom, c = 13.301(2) angstrom, beta = 98.336(5)degrees, V = 829.5(2) angstrom(3), and Z = 2.