title: Bis{tris-[3-(2-pyrid-yl)pyrazole]manganese(II)} dodeca-molybdosilicate hexa-hydrate.
abstract: The title compound, [Mn(C(8)H(7)N(3))(3)](2)[SiMo(12)O(40)]·6H(2)O, consists of an [SiMo(12)O(40)](4-) heteropolyanion, lying on a centre of inversion, and a complex [Mn(C(8)H(7)N(3))(3)](4+) cation. The Mn(II) atom of the cation is hexa-coordinated in a distorted octa-hedral geometry by six N atoms from three chelating 3-(2-pyrid-yl)pyrazole ligands. In the heteropolyanion, the four O atoms of the tetra-hedral SiO(4) group each half-occupy eight sites due to Si lying on the centre of inversion. N-H⋯O and O-H⋯O hydrogen bonding mediated by the water mol-ecules leads to a consolidation of the structure.
authors.affiliation: College of Medicine, Henan University, Kaifeng 475003, People's Republic of China.
authors.forename: Bao-Hua
authors.initials: BH
authors.lastname: Niu
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.forename: Yan
authors.initials: Y
authors.lastname: Xi
authors.forename: Su-Xia
authors.initials: SX
authors.lastname: Wu