title: Cyclo-hexyldimethyl-ammonium tetra-hydroxy-penta-borate.
abstract: The title compound, [C(8)H(18)N](+)·[B(5)O(6)(OH)(4)](-), has been synthesized under mild solvothermal conditions in the presence of N,N-dimethyl-cyclo-hexyl-amine acting as a template. The structure consists of penta-borate [B(5)O(6)(OH)(4)](-) anions connected through O-H⋯O hydrogen bonds into a three-dimensional framework, with large channels along [100], [010] and [001] directions. The [C(8)H(18)N](+) cations reside in the channels, inter-acting with the framework through N-H⋯O hydrogen bonds.
authors.affiliation: Department of Chemistry, Teachers College of Qingdao University, Qingdao, Shandong 266071, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Guo-Ming
authors.initials: GM
authors.lastname: Wang
authors.forename: Shu-Yun
authors.initials: SY
authors.lastname: Xue
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liang