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Cs2CoII(C2O4)2·4H2O

✍ Scribed by Schwendtner, Karolina ;Kolitsch, Uwe

Publisher: International Union of Crystallography
Year: 2004
Tongue: English
Weight: 303 KB
Volume: 60
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536804009626

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✦ Synopsis

Dicaesium cobalt(II) dioxalate tetrahydrate [tetraaquabis("oxalato)cobalt(II)dicaesium(I)], Cs 2 Co II (C 2 O 4 ) 2 Á4H 2 O, has a layered structure and is isotypic with Cs 2 Mg(C 2 O 4 ) 2 Á4H 2 O. The unique Co atom shows octahedral coordination, with a mean CoÐO bond length of 2.084 A Ê . The Cs atom is irregularly coordinated by nine O atoms. Layers of CoO 4 (H 2 O) 2 octahedra, whose non-water O ligands belong to nearly planar bidentate oxalate groups, are separated by corrugated layers of Cs atoms. Medium-strong hydrogen bonds provide connections within the layer planes. All atoms are in general positions except the Co atom, which lies on a twofold axis.

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