title: Tris{aqua-bis[3-(2-pyrid-yl)-1H-pyrazole]copper(II)} di-μ(9)-arsenato-hexa-triaconta-μ(2)-oxido-octa-deca-oxidoocta-deca-molybdate(VI).
abstract: The title compound, [Cu(C(8)H(7)N(3))(2)(H(2)O)](3)[As(2)Mo(18)O(62)], consists of two subunits, viz. an α-Dawson-type [As(2)Mo(18)O(62)](6-) anion and a complex [Cu(C(8)H(7)N(3))(2)(H(2)O)](2+) cation. The copper(II) ion (site symmetry .2) is penta-coordinated in a distorted square-pyramidal manner by four N atoms from two chelating 3-(2-pyrid-yl)pyrazole ligands in equatorial positions and one water mol-ecule in the apical position. In the heteropolyanion, two O atoms of the AsO(4) group (3. symmetry) are equally disordered about the threefold rotation axis. N-H⋯O and O-H⋯O hydrogen bonding between the neutral mol-ecules and the water mol-ecules leads to a consolidation of the structure.
authors.forename: Xiutang
authors.initials: X
authors.lastname: Zhang
authors.forename: Peihai
authors.initials: P
authors.lastname: Wei
authors.forename: Congwen
authors.initials: C
authors.lastname: Shi
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.forename: Bo
authors.initials: B
authors.lastname: Hu