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The Crystal Structure of Cs 2 Ga 2 S 5
Author(s) -
Friedrich Daniel,
Pfitzner Arno,
Schlosser Marc
Publication year - 2012
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.201204011
Subject(s) - humanities , art
The rod-like crystals were synthesized by thermal decomposition of a non-stoichiometric tablet of CsN3, GaS and S in an evacuated quartz glass ampoule. The crystal structure of the solid Cs2Ga2S5 was determined by single crystal X-ray diffraction analysis. The compound crystallizes monoclinic in the space group C2/c (no. 15) with the unit-cell dimensions a = 12.762(3) Å, b = 7.208(1) Å, c = 12.495(3) Å, β = 108.29(3)°; Z = 4. The main structural feature of Cs2Ga2S5 is a one-dimensional polyanionic chain of GaS4 tetrahedra in a matrix of caesium atoms. The chains contain disulfide ions similar to the parent compound CsGaS3. In Cs2Ga2S5, gallium is coordinated to three sulfide ions and one disulfide ion.