‘Face-to-Face’ relationships between oxocentred tetrahedra and cation-centred tetrahedral oxyanions in crystal structures of minerals and inorganic compounds | Mineralogical Magazine | Cambridge Core (original) (raw)

Abstract

Detailed analysis of the crystal structures of minerals and inorganic compounds containing oxocentred [OCu4] tetrahedra reveals the following principle for relationships between oxocentred tetrahedra and tetrahedral oxyanions (Tn+O4)−(8−n) with T = S6+ or V5+, or triangular pyramidal oxyanions (SeO3)2− (which may be considered as (SeO3E)2− tetrahedra assuming the lone pair E of selenium to be a fourth ligand): (Tn+O4)−(8−n) tetrahedra are ‘attached’ to the oxocentred tetrahedra so that their grounds (O-O-O and Cu-Cu-Cu) are parallel to each other and the mutual orientation is regular (O corners are exactly under Cu corners). We propose to describe these relationships as ‘face-to-face’, meaning that the oxocentred and cation-centred tetrahedra ‘meet’ along their ‘whole’ triangular faces. Geometric characteristics of ‘face-to-face’ relationships are discussed.

Type

Research Article

References

Berrigan, R. and Gatehouse, B.M. (1996) Cu3Er(SeO3)2O2Cl, the erbium analogue of franci-site. Acta Crystallogr., C52, 496–7Google Scholar

Brunel-Lauegt, M. and Guitel, J.C. (1977) Structure cristalline de Cu5O2(PO4)2. Acta Crystallogr.,B33, 3465–8.Google Scholar

Effenberger, H. (1986) PbCu3(OH)(NO3)(SeO3)3(H2O).5 und Pb2Cu3O2(NO3)2(SeO3)2. Synthese und Kristallstrukturuntersuchung. Monatsh. Chem., 117, 1099–106.Google Scholar

Effenberger, H. and Pertlik, F. (1986) Die Kristallstrukturen der Kupfer(II)-oxo-selenite Cu2O(SeO3) (kubisch und monoklin) und Cu4O(SeO3)3 (monoklin und triklin). Monatsh. Chem., 117, 887–96.Google Scholar

Engel, P. (1986) Geometric Crystallography: An Axiomatic Introduction to Crystallography. D. Reidel Publishing Company, Dordrecht.Google Scholar

Filatov, S.K., Semenova, T.F. and Vergasova, L.P. (1992) Types of polymerization of [OCu4]6+ in inorganic compounds with ‘additional’ oxygen atoms. Dokl. Akad. Nauk SSSR, 322, 536–9 (in Russian).Google Scholar

Krivovichev, S.V. and Filatov, S.K. (1998) Confirmation of single chains of edge-sharing anion-centred tetrahedra. Z Kristallogr., 213, 316–8.Google Scholar

Krivovichev, S.V., Filatov, S.K., Semenova, T.F. and Rozhdestvenskaya, I.V. (1998 a) Crystal chemistry of inorganic compounds based on the oxocentred chains. I. Crystal structure of chloromenite, Cu9O2(SeO3)4Cl6. Z. Kristallogr., 213, 645–64.Google Scholar

Krivovichev, S.V., Filatov, S.K. and Semenova, T.F. (1998 b) Types of cationic complexes on the base of oxocentred tetrahedra [OM4] in crystal structures of inorganic compounds. Russ. Chem. Reviews, 67, 137–55.Google Scholar

Krivovichev, S.V., Shuvalov, R.R., Semenova, T.F. and Filatov, S.K. (1999) Crystal chemistry of inorganic compounds based on the oxocentred chains. III. Crystal structure of georgbokiite, Cu5O2(SeO3)2Cl2. Z. Kristallogr.,(in press).Google Scholar

Lulei, M., Steinwand, S.J. and Corbett, J.D. (1995) Interstitially-stabilized praseodymium(III) compounds Na2Pr4Br9NO and Pr8Brl3N3O: structures on the border between salts and clusters. Inorg. Chem., 34, 2671–7.Google Scholar

Pring, A., Gatehouse, B.M. and Birch, W.D. (1990) Francisite, Cu3Bi(SeO3)2O2Cl, a new mineral from Iron Monarch, South Australia: description and crystal structure. Amer. Mineral., 75, 1421–5.Google Scholar

Schleid, Th. (1996) [NM4] tetrahedra in nitride sulfides and chlorides of the trivalent lanthanides. Eur. J. Solid State Inorg. Chem., 33, 227–40.Google Scholar

Scordari, F. and Stasi, F. (1990) The crystal structure of euchlorine, NaKCu3O(SO4)3. Neues Jb. Mineral., Abh., 161, 241–53.Google Scholar

Shannon, R. D. and Calvo, C. (1973) Crystal structure of Cu5V2O10. Acta Crystallogr.,B29, 1338–45.Google Scholar

Starova, G.L., Filatov, S.K., Fundamensky, V.S. and Vergasova, L.P. (1991) The crystal structure of fedotovite, K2Cu3O(SO4)3. Mineral. Mag., 55, 613–6.Google Scholar

Starova, G.L., Krivovichev, S.V., Fundamensky, V.S. and Filatov, S.K. (1997) The crystal structure of averievite Cu5O2(VO4)2.MCI: comparison with related compounds. Mineral. Mag., 61, 441–6.Google Scholar

Varaksina, T.V., Fundamensky, V.S., Filatov, S.K. and Vergasova, L.P. (1990) The crystal structure of kamchatkite, a new naturally occuring oxychloride sulphate of potassium and copper. Mineral. Mag., 54, 613–6.Google Scholar