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Preparation and Crystal Structure of the New Quaternary Europium‐polysulfide KCuEu 2 s 6
Author(s) -
Bensch Wolfgang,
Dürichen Peter
Publication year - 1996
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19961291214
Subject(s) - polysulfide , chemistry , europium , ion , crystal structure , crystallography , tetrahedron , inorganic chemistry , trigonal crystal system , sulfur , organic chemistry , electrode , electrolyte
The new quaternary europium polysulfide KCuEu 2 S 6 was obtained using the reactive flux method at an intermediate temperature of 380°C by reacting K 2 S 3 with elemental Cu, EuS and an excess of sulfur. The Eu 3+ ions exhibit a bicapped trigonal prismatic coordination and the Cu + ions are in a tetrahedral environment. The crystal structure is characterized by anionic layers of interconnected Eu and Cu polyhedra with K + ions residing between the anionic sheets [Cu‐Eu 2 S 6 ] n n — . The Cu + ions occupy one half of the tetrahedral sites in an ordered fashion.