Titre du document / Document title

The crystal structure of fedotovite, K₂CU₃O(SO₄)₃

Auteur(s) / Author(s)

STAROVA G. L. ; FILATOV S. K. ; FUNDAMENSKY V. S. ; VERGASOVA L. P. ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

Leningrad state univ., dep. crystallography, Leningrad 19164,

Résumé / Abstract

The crystal structure of fedotovite, K₂Cu₃O(SO₄)₃ has been determined, space group C2/c, a 19.037(6), b 9.479(2), c 14-231 (5) Å, β 111.04(3)°, Z=8, D_x=3.09 g/cm³. The main units of the fedotovite structure are formed around two additional oxygen atoms and consist of edge-sharing [OCu₄] tetrahedra and four [SO₄] tetrahedra attached to them. The units are further connected by two [SO₄] tetrahedra, building distinct layers parallel to ty yz plane. These layers are interconnected by potassium atoms. In the fedotovite structure, the three kinds of copper atoms are fivefold (4+1) coordinated to oxygen atoms with a strong Jahn-Teller effect

Revue / Journal Title

Mineralogical Magazine   ISSN 0026-461X   CODEN MNLMBB 

Source / Source

1991, vol. 55, n^o4, pp. 613-616 (5 ref.)

Langue / Language

Anglais

Editeur / Publisher

Mineralogical Society, London, ROYAUME-UNI  (1969) (Revue)

Mots-clés anglais / English Keywords

sulfates ; crystal structure ; atomic packing ; cell dimensions ; unit cell ; space groups ; coordination ; distortion ; X-ray diffraction analysis ;

Mots-clés français / French Keywords

Sulfate ; Structure cristalline ; Empilement atome ; Constante réticulaire ; Maille élémentaire ; Groupe espace ; Coordinence ; Distorsion ; Diffraction RX ; Fedotovite ;

Mots-clés espagnols / Spanish Keywords

Sulfato ; Estructura cristalina ; Estructura átomo ; Constante reticular ; Celdilla cristalina ; Grupo espacio ; Coordinancia ; Distorsión ; Difracción RX ;

Localisation / Location

INIST-CNRS, Cote INIST : 3052, 35400002273853.0140