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Synthese und Kristallstruktur von Cs 3 Y 7 Se 12
Author(s) -
Folchnandt Matthias,
Schleid Thomas
Publication year - 1997
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.19976231005
Subject(s) - orthorhombic crystal system , crystallography , yttrium , octahedron , crystal structure , selenium , single crystal , materials science , chemistry , metal , metallurgy , oxide
Synthesis and Crystal Structure of Cs 3 Y 7 Se 12 The oxidation of yttrium metal with selenium in the presence of CsCl (7 d, 700°C, evacuated silicia tubes) results in the formation of pale yellow, lath‐shaped single crystals of Cs 3 Y 7 Se 12 . The crystal structure (orthorhombic, Pnnm, Z = 2, a = 1272.8(3), b = 2627.7(5), c = 413.32(8) pm) consists of edge‐ and vertex‐connected [YSe 6 ] octahedra forming a rocksalt‐related network [Y 7 Se 12 ] 3− . One‐dimensional infinite channels along [001], apt to take up extra cations, provide coordination numbers of 6 and 7 + 1, respectively, for two crystallographically different Cs + .