title: Poly[aqua-hexa-benzimidazole-octa-μ-cyanido-octa-cyanidotricopper(II)ditungstate(V)].
abstract: In the polymeric title compound, [Cu(3)W(2)(CN)(16)(C(7)H(6)N(2))(6)(H(2)O)](n), the coordination geometry of the W(V) atom is eight-coordinate dodeca-hedral, where four CN groups of [W(CN)(8)] are bridged to Cu(II) ions, and the other four CN groups are not bridged. The coordination geometries of the Cu(II) ions are five-coordinate pseudo-square-based pyramidal. There are two distinct Cu sites, which build and link the cyanido-bridged Cu-W ladder chains. Successive connections lead to the formation of a two-dimensional network. The H atoms of a coordinated water molecule and the imino groups form hydrogen bonds to the N atoms of non-bridged CN groups.
authors.affiliation: Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo 113-0033, Japan.
authors.forename: Kenta
authors.initials: K
authors.lastname: Imoto
authors.forename: Souhei
authors.initials: S
authors.lastname: Kaneko
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Tsunobuchi
authors.forename: Koji
authors.initials: K
authors.lastname: Nakabayashi
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Ohkoshi