title: Tetra-aqua-tetra-kis-(4,4'-bipyridine dioxide-κO)terbium(III) octa-cyanidotungstate(V).
abstract: In the title compound, [Tb(C(10)H(8)N(2)O(2))(4)(H(2)O)(4)][W(CN)(8)], both metal atoms are eight-coordinated. The Tb(III) ion displays a dodeca-hedral geometry, while the W(v) ion exhibits a distorted square-anti-prismatic geometry. The Tb atoms are located on a special position of site symmetry -4, whereas the W atoms are located on a twofold rotation axis. The cations are linked by O-H⋯O hydrogen bonds. The title compound is isotypic with the corresponding and previously described Mo compound [Qian & Yuan (2011 ▶). Acta Cryst. E67, m845].
authors.affiliation: School of Biology and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003,  People's Republic of China.
authors.forename: Yu-Sheng
authors.initials: YS
authors.lastname: Shi
authors.forename: Mao-Qian
authors.initials: MQ
authors.lastname: Ran
authors.forename: Ying-Ying
authors.initials: YY
authors.lastname: Chen
authors.forename: Ai-Hua
authors.initials: AH
authors.lastname: Yuan