Co3(PO4)2·4H2O

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

doi:10.1107/s1600536808028377

Co3(PO4)2·4H2O

Young Hoon Lee, G Q Max Lu + Show 4 more

Open Access

https://doi.org/10.1107/s1600536808028377

Copy DOI

Abstract

Single crystals of Co3(PO4)2·4H2O, tricobalt(II) bis[orthophosphate(V)] tetrahydrate, were obtained under hydrothermal conditions. The title compound is isotypic with its zinc analogue Zn3(PO4)2·4H2O (mineral name hopeite) and contains two independent Co2+ cations. One Co2+ cation exhibits a slightly distorted tetrahedral coordination, while the second, located on a mirror plane, has a distorted octahedral coordination environment. The tetrahedrally coordinated Co2+ is bonded to four O atoms of four PO4 3− anions, whereas the six-coordinate Co2+ is cis-bonded to two phosphate groups and to four O atoms of four water molecules (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.

Highlights

Single crystals of Co3(PO4)24H2O, tricobalt(II) bis[orthophosphate(V)] tetrahydrate, were obtained under hydrothermal conditions
H atoms treated by a mixture of independent and constrained refinement max = 0.55 e Å3
Co2+ is bonded to four O atoms of four PO43 anions, whereas the six-coordinate Co2+ is cis-bonded to two phosphate groups and to four O atoms of four water molecules, forming a framework structure

Summary

Data collection

Kosin University, 149-1 Dongsam-dong, Yeongdo-gu, Busan 606-701, Republic of Korea. H atoms treated by a mixture of independent and constrained refinement max = 0.55 e Å3. Single crystals of Co3(PO4)24H2O, tricobalt(II) bis[orthophosphate(V)] tetrahydrate, were obtained under hydrothermal conditions. The title compound is isotypic with its zinc analogue Zn3(PO4)24H2O (mineral name hopeite) and contains two independent Co2+ cations. One Co2+ cation exhibits a slightly distorted tetrahedral coordination, while the second, located on a mirror plane, has a distorted octahedral coordination environment. Co2+ is bonded to four O atoms of four PO43 anions, whereas the six-coordinate Co2+ is cis-bonded to two phosphate groups and to four O atoms of four water molecules (two of which are located on mirror planes), forming a framework structure. O—H O are present throughout the crystal structure

Related literature

Graphite monochromator ω scans