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Bis{tris-[3-(2-pyrid-yl)-1H-pyrazole]nickel(II)} dodeca-molybdosilicate tetra-hydrate.

ABSTRACT: The asymmetric unit of the title compound, [Ni(C(8)H(7)N(3))(3)](2)[SiMo(12)O(40)]·4H(2)O, consists of a complex [Ni(C(8)H(7)N(3))(3)](2+) cation, half of a Keggin-type heteropolyanion [SiMo(12)O(40)](4-) and two uncoordinated water mol-ecules. The Ni(2+) cation is surrounded in a slightly distorted octa-hedral coordination by six N atoms from three chelating 3-(2-pyrid-yl)-1H-pyrazole ligands. In the heteropolyanion, two O atoms of the central SiO(4) group ( symmetry) are equally disordered about an inversion centre. N-H?O and O-H?O hydrogen bonding between the cations, anions and the uncoordinated water mol-ecules leads to a consolidation of the structure.

SUBMITTER: Zhang X

PROVIDER: S-EPMC2979803 | biostudies-other | 2010

REPOSITORIES: biostudies-other

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Bis{tris-[3-(2-pyrid-yl)-1H-pyrazole]nickel(II)} dodeca-molybdosilicate tetra-hydrate.

Zhang Xiutang X Yuan Dong D Wei Peihai P Li Bin B Hu Bo B

Acta crystallographica. Section E, Structure reports online 20100113 Pt 2

The asymmetric unit of the title compound, [Ni(C(8)H(7)N(3))(3)](2)[SiMo(12)O(40)]·4H(2)O, consists of a complex [Ni(C(8)H(7)N(3))(3)](2+) cation, half of a Keggin-type heteropolyanion [SiMo(12)O(40)](4-) and two uncoordinated water mol-ecules. The Ni(2+) cation is surrounded in a slightly distorted octa-hedral coordination by six N atoms from three chelating 3-(2-pyrid-yl)-1H-pyrazole ligands. In the heteropolyanion, two O atoms of the central SiO(4) group ( symmetry) are equally disordered abo ...[more]

PMID: 21579630

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