Cu2MnMIVS4 (MIV = Si, Ge, Sn) — analysis of crystal structures and tetrahedra volumes of normal tetrahedral compounds
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Thomas Bernert
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 Pmn21 in a wurtzite type superstructure. The refinement of Cu2MnSiS4 converged to R = 0.0214 and wR2 = 0.0477. The redetermination 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-42m, 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.
© by Oldenbourg Wissenschaftsverlag, München
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Articles in the same Issue
- Symmetries of coincidence site lattices of cubic lattices
- About the degree of hydration in potassiumtrisoxalatochromate hydrate
- Structural variations of Cr-doped (Y,REE)AlO3 perovskites
- Structure change of Mn2O3 under high pressure and pressure-induced transition
- To crystal chemistry of compounds of MHgYX (M = Cu, Ag, Y = S, Se, X = Cl, Br, I)
- The crystal structures of solvent-free alkali-metal squarates from powder diffraction data
- PDF from X-ray powder diffraction for nanometer-scale atomic structure analysis of quasicrystalline alloys
- Cu2MnMIVS4 (MIV = Si, Ge, Sn) — analysis of crystal structures and tetrahedra volumes of normal tetrahedral compounds
- Synthesis and crystal structure of a homotrinuclear Ni(II) complex
- Two new mononuclear Ni(II) complexes with reduced ONNO type Schiff base
- The cubic limiting complexes of lattice complexes with trigonal characteristic symmetry
