The triclinic form of dipotassium cobalt(II) bis(dihydrogendiphosphate) dihydrate
Identifieur interne : 000463 ( Main/Exploration ); précédent : 000462; suivant : 000464The triclinic form of dipotassium cobalt(II) bis(dihydrogendiphosphate) dihydrate
Auteurs : Abdellatif Lamhamdi [Maroc] ; Rachid Essehli [Maroc] ; Brahim El Bali [Maroc] ; Michal Dušek [République tchèque] ; Karla Fejfarová [République tchèque]Source :
- Acta Crystallographica Section E: Structure Reports Online [ 1600-5368 ] ; 2011.
Abstract
In the title compound, K2Co(H2P2O7)2·2H2O, the octahedrally coordinated Co2+ ion lies on an inversion centre. Two bidentate dihydrogendiphosphate anions form the equatorial plane of the [CoO6] octahedron which is completed by two water molecules in axial positions. This results in isolated {Co(H2O)2[H2P2O7]2}4− entities linked into a three-dimensional network through K—O bonds and O—H⋯O hydrogen-bonding interactions involving the dihydrogendiphosphate anions and water molecules. The dihydrogendiphosphate anion, (H2P2O7)2−, is bent and shows an almost eclipsed conformation.
Url:
DOI: 10.1107/S1600536811016345
PubMed: 21754566
PubMed Central: 3120459
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Pmc, to step Corpus: 000394
- to stream Pmc, to step Curation: 000393
- to stream Pmc, to step Checkpoint: 000270
- to stream Ncbi, to step Merge: 000177
- to stream Ncbi, to step Curation: 000177
- to stream Ncbi, to step Checkpoint: 000177
- to stream Main, to step Merge: 000465
- to stream Main, to step Curation: 000463
Le document en format XML
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<front><div type="abstract" xml:lang="en"><p>In the title compound, K<sub>2</sub>
Co(H<sub>2</sub>
P<sub>2</sub>
O<sub>7</sub>
)<sub>2</sub>
·2H<sub>2</sub>
O, the octahedrally coordinated Co<sup>2+</sup>
ion lies on an inversion centre. Two bidentate dihydrogendiphosphate anions form the equatorial plane of the [CoO<sub>6</sub>
] octahedron which is completed by two water molecules in axial positions. This results in isolated {Co(H<sub>2</sub>
O)<sub>2</sub>
[H<sub>2</sub>
P<sub>2</sub>
O<sub>7</sub>
]<sub>2</sub>
}<sup>4−</sup>
entities linked into a three-dimensional network through K—O bonds and O—H⋯O hydrogen-bonding interactions involving the dihydrogendiphosphate anions and water molecules. The dihydrogendiphosphate anion, (H<sub>2</sub>
P<sub>2</sub>
O<sub>7</sub>
)<sup>2−</sup>
, is bent and shows an almost eclipsed conformation.</p>
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