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The crystal structure of the title complex, [Ni(C3H4N2)6]CO3.5H2O, isostructural with the Cd, Co and Ru analogues, is built up from cationic and anionic sheets parallel to the basal plane of the hexagonal unit cell. The former contain the [Ni(C3H4N2)6]2+ cations and the latter the CO32- anions, together with the hydration water molecules. These are disordered at both sides of the P63/m mirror plane, which thus exists in an average sense only. The sheets are linked by an extensive hydrogen-bonding system, involving the non-coordinated NH imidazole groups, the hydration water molecules and the O atoms of the carbonate anions. The latter are acceptors of nine simultaneous strong hydrogen bonds.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks global, Ni_CO3_Imid

hkl

Structure factor file (CIF format)
Contains datablock Ni_CO3_Imid

CCDC reference: 130667

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