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. 2008 Sep 13;64(Pt 10):i67-i68.
doi: 10.1107/S1600536808028377.

Co(3)(PO(4))(2)·4H(2)O

Young Hoon Lee, Jack K Clegg, Leonard F Lindoy, G Q Max Lu, Yu-Chul Park, Yang Kim

Co(3)(PO(4))(2)·4H(2)O

Young Hoon Lee et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

Single crystals of Co(3)(PO(4))(2)·4H(2)O, tricobalt(II) bis-[ortho-phosphate(V)] tetra-hydrate, were obtained under hydro-thermal conditions. The title compound is isotypic with its zinc analogue Zn(3)(PO(4))(2)·4H(2)O (mineral name hopeite) and contains two independent Co(2+) cations. One Co(2+) cation exhibits a slightly distorted tetra-hedral coordination, while the second, located on a mirror plane, has a distorted octa-hedral coordination environment. The tetra-hedrally coordinated Co(2+) is bonded to four O atoms of four PO(4) (3-) anions, whereas the six-coordinate Co(2+) is cis-bonded to two phosphate groups and to four O atoms of four water mol-ecules (two of which are located on mirror planes), forming a framework structure. In addition, hydrogen bonds of the type O-H⋯O are present throughout the crystal structure.

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Figures

Fig. 1.
Fig. 1.
The asymmetric unit of compound (I), drawn with displacement parameters at the 50% probability level. H atoms are given as spheres of arbitrary radius.
Fig. 2.
Fig. 2.
A schematic representation of a section of the three-dimensional network in a projection along [001]. Hydrogen atoms are omitted for clarity.
See this image and copyright information in PMC

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