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On the Crystal Structure of LaCaCuGaO 5
Author(s) -
Luzikova A. V.,
Kharlanov A. L.,
Antipov E. V.,
MüllerBuschbaum Hk.
Publication year - 1994
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19946200220
Subject(s) - brownmillerite , orthorhombic crystal system , crystallography , octahedron , crystal structure , tetrahedron , group (periodic table) , materials science , crystal (programming language) , symmetry (geometry) , ion , chemistry , geometry , mathematics , perovskite (structure) , computer science , organic chemistry , programming language
The crystal structure of LaCaCuGaO 5 has been investigated by single crystal X‐ray analysis. It crystallizes with orthorhombic symmetry, space group C 2v 22 –Ima2, a = 15.8467, b = 5,5077, c = 5.3188 Å, Z = 4. LaCaCuGaO 5 belongs to the mineral Brownmillerite showing layers of corner connected CuO 6 octahedra linked by GaO 4 tetrahedra. The La 3+ and Ca 2+ ions are distributed statistically over one crystallographic point position.