title: Proton-stabilized three-dimensional anionic framework in H[Zn6O2(BO3)3].
abstract: A three-dimensional anionic framework built up from [ZnO4] tetrahedra and planar [BO3] groups, stabilized by H atoms, has been found for hydrogen zinc oxide borate, H[Zn6O2(BO3)3]. Boron and one of the borate O atoms are on 18e (2) positions. Triple units of [ZnO4] tetrahedra sharing a common oxygen vertex on a 12c (3) site and strong asymmetrical linear hydrogen bonds with the H atom [on a 12c (3) position] disordered over a twofold axis are specific structural features of this zincoborate. There is evidence that the reported Zn4O(BO3)2 [Harrison, Gier & Stuky (1993). Angew. Chem. Int. Ed. Engl. 32, 724-726] corresponds to this structure.
authors.affiliation: Fachbereich Chemie, Universität Marburg, Hans-Meerwein-Strasse, D-35043 Marburg, Germany. massa@chemie.uni-marburg.de
authors.forename: Werner
authors.initials: W
authors.lastname: Massa
authors.forename: Olga V
authors.initials: OV
authors.lastname: Yakubovich
authors.forename: Olga V
authors.initials: OV
authors.lastname: Dimitrova