(Cu2MnS4)-S-IV (M-IV = Si, Ge, Sn) - analysis of crystal structures and tetrahedra volumes of normal tetrahedral compounds

Bernert, Thomas and Pfitzner, Arno (2005) (Cu2MnS4)-S-IV (M-IV = Si, Ge, Sn) - analysis of crystal structures and tetrahedra volumes of normal tetrahedral compounds. ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 220 (11). pp. 968-972. ISSN 0044-2968,

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Abstract

The crystal structures of the normal tetrahedral compounds Cu2MnSiS4, Cu2MnGeS4, and Cu2MnSnS4 are presented. The structures were refined from single crystal X-ray data. Cu2MnSiS4 and Cu2MnGeS4 crystallize in the space group Pmn2(1) in a wurtzite type superstructure. The refinement Of Cu2MnSiS4 converged to R = 0.0214 and wR2 = 0.0477. The redetennination of Cu2MnGeS4 converged to R = 0.0281, wR2 = 0.0739. The tetrahedra volumes of the coordination polyhedra of the cations in these compounds are calculated and compared with those of Cu2MnSnS4 (redetermination, spacegroup I (4) over bar 2m, sphalerite type superstructure, R = 0.0146, wR2 = 0.0425). In the wurtzite type structures the tetrahedra volumes differ significantly for different cations while they differ only in a small range in the sphalerite type structure.

Item Type: Article
Uncontrolled Keywords: MAGNETIC-PROPERTIES; tetrahedral structures; quaternary copper chalcogenides; Wurtzite structure type; sphalerite structure type; single crystal structure analysis; X-ray diffraction
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner
Depositing User: Dr. Gernot Deinzer
Date Deposited: 21 Jun 2021 07:36
Last Modified: 21 Jun 2021 07:36
URI: https://pred.uni-regensburg.de/id/eprint/36854

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