title: Bis(ethyl-enediammonium) tetra-deca-borate.
abstract: The title compound, 2C(2)H(10)N(2) (2+)·B(14)O(20)(OH)(6) (4-), consists of a centrosymmetric tetra-deca-borate anion and two ethyl-enediammonium cations. The anions are inter-connected through strong O-H⋯O hydrogen bonds into a three-dimensional supra-molecular network with channels along [100], [010], [001] and [111]. The diprotonated cations reside in the channels and inter-act with the inorganic framework by extensive 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: Guo-Ming
authors.initials: GM
authors.lastname: Wang
authors.forename: Pei
authors.initials: P
authors.lastname: Wang
authors.forename: Zeng-Xin
authors.initials: ZX
authors.lastname: Li
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Hui-Luan
authors.initials: HL
authors.lastname: Liu