title: Tetra-kis{4-[(2H-tetra-zol-5-yl)meth-yl]morpholin-4-ium} dodeca-tungstosilicate hexa-hydrate.
abstract: The crystal structure of the title compound, (C(6)H(12)N(5)O)(4)[W(12)(SiO(4))O(36)]·6H(2)O, consists of an α-Keggin-type [W(12)(SiO(4))O(36)](4-) polyoxidoanion, four [(2H-tetra-zol-5-yl)meth-yl]morpholinium cations and six uncoordinated water mol-ecules. In the cations, the morpholine rings display chair conformations. Extensive N-H⋯O, N-H⋯N, O-H⋯O and O-H⋯N hydrogen bonds are present in the crystal structure.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Yousefi
authors.forename: Hossein
authors.initials: H
authors.lastname: Eshtiagh-Hosseini
authors.forename: Masoud
authors.initials: M
authors.lastname: Mirzaei
authors.forename: Ahmad
authors.initials: A
authors.lastname: Gholizadeh
authors.forename: Mohsen
authors.initials: M
authors.lastname: Nikpour