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The triclinic form of dipotassium cobalt(II) bis-(dihydrogendiphosphate) dihydrate.

ABSTRACT: In the title compound, K(2)Co(H(2)P(2)O(7))(2)·2H(2)O, the octa-hedrally coordinated Co(2+) ion lies on an inversion centre. Two bidentate dihydrogendiphosphate anions form the equatorial plane of the [CoO(6)] octa-hedron which is completed by two water mol-ecules in axial positions. This results in isolated {Co(H(2)O)(2)[H(2)P(2)O(7)](2)}(4-) entities linked into a three-dimensional network through K-O bonds and O-H?O hydrogen-bonding inter-actions involving the dihydrogendiphosphate anions and water mol-ecules. The dihydrogendiphosphate anion, (H(2)P(2)O(7))(2-), is bent and shows an almost eclipsed conformation.

SUBMITTER: Lamhamdi A

PROVIDER: S-EPMC3120459 | biostudies-literature | 2011 Jun

REPOSITORIES: biostudies-literature

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The triclinic form of dipotassium cobalt(II) bis-(dihydrogendiphosphate) dihydrate.

Lamhamdi Abdellatif A Essehli Rachid R El Bali Brahim B Dušek Michal M Fejfarová Karla K

Acta crystallographica. Section E, Structure reports online 20110520 Pt 6

In the title compound, K(2)Co(H(2)P(2)O(7))(2)·2H(2)O, the octa-hedrally coordinated Co(2+) ion lies on an inversion centre. Two bidentate dihydrogendiphosphate anions form the equatorial plane of the [CoO(6)] octa-hedron which is completed by two water mol-ecules in axial positions. This results in isolated {Co(H(2)O)(2)[H(2)P(2)O(7)](2)}(4-) entities linked into a three-dimensional network through K-O bonds and O-H⋯O hydrogen-bonding inter-actions involving the dihydrogendiphosphate anions and ...[more]

PMID: 21754566

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