SYNTHESIS AND STRUCTURE OF NA2CU2ZRS4

The new compound Na2Cu2ZrS4, has been synthesized through direct react ion of the elements with an Na2Sn flux at 375 degrees C. The structure has been determined by single-crystal X-ray methods. The compound cry stallizes in space group C-2h(3) - C2/m of the monoclinic system with two formula units in a cell of dimensions a = 13.657(9), b = 3.720(3), c = 7.025(5) Angstrom, beta = 112.44(3)degrees (T = 113 K). The struc ture is composed of (2)(infinity)[Cu2ZrS42-] layers separated by Na+ c ations, A (2)(infinity)[Cu2ZrS42-] layer is composed of pairs of CuS4 tetrahedra alternating with ZrS6 octahedra. (C) 1995 Academic Press, I nc.