Missen, O. P., Weil, M., Mills, S. J., & Libowitzky, E. (2020). The crystal structure of the first synthetic copper(ⅠⅠ) tellurite arsenate,CuⅠⅠ₅(TeⅣO₃)₂(AsⅤO₄)₂. Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 76, 1–6. https://doi.org/10.1107/s2052520619014823
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials
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ISSN:
0108-7681
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Date (published):
2020
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Number of Pages:
6
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Peer reviewed:
Yes
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Keywords:
Electronic, Optical and Magnetic Materials; Atomic and Molecular Physics, and Optics; Materials Chemistry; Metals and Alloys
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Abstract:
Crystals of the first synthetic copper tellurite arsenate, CuII5(TeIVO3)2(AsVO4)2 [systematic name pentacopper(II) bis-oxotellurate(IV) bis-oxoarsenate(V)], were grown by the chemical vapour transport method and structurally determined using single-crystal X-ray diffraction. CuII5(TeIVO3)2(AsVO4)2 possesses a novel structure type including a new topological arrangement of CuII and O atoms. CuII5(TeIVO3)2(AsVO4)2 is formed from a framework of two types of Jahn-Teller distorted [CuIIO6] octahedra (one of which is considerably elongated) and [CuIIO5] square pyramids, which are linked by edge-sharing to form chains and dimers and by corner-sharing to complete a three-dimensional framework. [AsVO4] tetrahedra and [TeIVO5] polyhedra bridge the edges of channels along the a-axis direction, with void space remaining for the TeIV stereoactive 5s2 lone pairs. A comparison is made between the crystal structure of CuII5(TeIVO3)2(AsVO4)2 and those of known compounds and minerals, in particular fumarolitic Cu minerals.
