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The crystal structure of averievite, Cu5O2(VO4)2.nMX: comparison with related compounds

Published online by Cambridge University Press:  05 July 2018

G. L. Starova ,
S. V. Krivovlchev ,
V. S. Fundamensky  and
S. K. Filatov
G. L. Starova
Affiliation:
Departament of Crystallography, Saint-Petersburg State University, University Emb. 7/9, St.Petersburg, 199034, Russia
S. V. Krivovlchev
Affiliation:
Departament of Crystallography, Saint-Petersburg State University, University Emb. 7/9, St.Petersburg, 199034, Russia
V. S. Fundamensky
Affiliation:
Departament of Crystallography, Saint-Petersburg State University, University Emb. 7/9, St.Petersburg, 199034, Russia
S. K. Filatov
Affiliation:
Departament of Crystallography, Saint-Petersburg State University, University Emb. 7/9, St.Petersburg, 199034, Russia
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Abstract

The crystal structure of averievite, Cu5O2(VO4)2·nMX has been determined. Trigonal system, space group P3, a = 6.375(1), c = 8.399(1) Å, V = 295.6(1) Å3, Z = 1, Dx = 4.01(1) g/cm3. The atomic arrangement is characterized by infinite nets parallel to (001) composed of [OCu4]6+ tetrahedra linked via corners in hexagonal rings. The bases of neigbouring tetrahedra are in one plane and their non-shared corners are turned to the opposite sides. The [VO4]3− tetrahedra are attached to the bases of [OCu4] tetrahedra. There are large (R >3.2 Å) channels in the structure where large molecular particles can enter. The comparison of the averievite structure with related compounds (in particular, copper oxovanadates) is given from the point of view of [OT4] polyion crystal chemistry.

Keywords

averievitecrystal structure
Type
Crystal Structure
Information
Mineralogical Magazine , Volume 61 , Issue 406 , June 1997 , pp. 441 - 446
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1997

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