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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Zur Kenntnis des Oxocuprats (Cu,Co)3,75Mo3O12 / On the Oxocuprate (C u,Co)3,75Mo3O12

H. Szillat and Hk. Müller-Buschbaum

Abstract

Single crystals of (Cu,Co)3,75Mo3O12 have been prepared by recrystallization from melts and investigated by X-ray diffractometer techniques. The compound crystallizes with orthorhombic symmetry, space group D162h-Pnma, a = 5.092(1), b = 10.624(3), c = 17.804(4) Å, Z = 4 and is isotypic to NaCo2.31Mo3O12. The crystal structure is discussed and it is shown, that the trigonal prismatically coordinated copper positions are occupied in a different manner. One of the alternate sites is beside the centre of the prisms, and the other one is shifted towards one of the faces of the rectangular prism. This detail may be interpreted by assigning the valance states CuI and CuII. The MO6 octahedra are occupied statistically by copper and cobalt.

Received: 1994-10-10
Published Online: 2014-6-2
Published in Print: 1995-5-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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