The preparation, characterisation and structure of Ca8[AlO2]12Te2 and Cd8[AlO2]12Te2; two new members of the sodalite family

Abstract

Two new aluminate sodalites containing the telluride ion have been synthesised for the first time. The structures of Ca₈ [AlO₂ ]₁₂Te₂ and Cd₈ [AlO₂ ]₁₂Te₂ have been determined using the Rietveld refinement of powder X-ray diffraction data. ¹²⁵Te and ²⁷Al MAS NMR and IR spectroscopy have been used to investigate the effect of the large occluded ion on the framework moiety.