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- Title
The crystal structure of the first synthetic copper(II) tellurite arsenate, Cu<sup>II</sup><sub>5</sub>(Te<sup>IV</sup>O<sub>3</sub>)<sub>2</sub>(As<sup>V</sup>O<sub>4</sub>)<sub>2</sub>.
- Authors
Missen, Owen P.; Weil, Matthias; Mills, Stuart J.; Libowitzky, Eugen
- 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.
- Subjects
CRYSTAL structure; ARSENATES; NONBONDING electron pairs; COPPER; X-ray diffraction; POLYHEDRA; TETRAHEDRA
- Publication
Acta Crystallographica Section B: Structural Science, Crystal Engineering & Materials, 2020, Vol 76, Issue 1, p1
- ISSN
2052-5192
- Publication type
Article
- DOI
10.1107/S2052520619014823