Single-crystal structure of copper lanthanum telluride Cu0.28LaTe2: a disordered tunnel structure
Abstract
<h2>Acta Crystallographica Section C</h2><h3>Crystal Structure Communications</h3><h3>0108-2701</h3> <h2>research papers (inorganic compounds)</h2> Volume 39 Part 6 Pages 668-670 June 1983 <h2>Single-crystal structure of copper lanthanum telluride Cu 0 . 28 LaTe 2 : a disordered tunnel structure</h2> Nguyen-Huy Dung, M.-P. Pardo and P. Boy Acta Cryst. (1983). C39, 668-670 Single-Crystal Structure of Copper Lanthanum Telluride Cuo.28LaTe2 A Disordered Tunnel Structure BY NGUYEN-HUY DUNG, MARIE-PAULE PARDO AND PIERRE BOY Laboratoire de Physique (Laboratoire de Chimie Mindrale Structurale, associd au CNRS n° 200), Facultd des Sciences Pharmaceutiques et Biologiques de Paris V, 4 avenue de l'Observatoire, 75270 Paris CEDE)( 06, France (Received 15 June 1982; accepted 3 February 1983) Abstract. Mr- 411.90, orthorhombic, Pbcm, a = 7.726 (4), b= 8.603 (5), c= 6.246 (2)A, Ox= 6.59 Mg m-a, Z = 4, F(000) = 676, T= 298 K. The structure has been refined by the least-squares method to a final R value of 0.05 for 622 independent reflections. The eightfold-coordinated La atom is inside a bicapped triangular prism of Te atoms. The polyhedra are connected so that they create pentagonal tunnels in the [001] direction which are occupied by Cu atoms in positional disorder. The Cu atoms are placed in partially occupied