title: A new polymorph of Cu(3)B(2)O(6).
abstract: A new polymorph of nonacopper(II) bis(orthoborate) bis(hexaoxodiborate), Cu(9)(BO(3))(2)(B(2)O(6))(2), or Cu(3)B(2)O(6) with Z' = 3, has a pseudo-layered monoclinic structure containing BO(3) triangles and B(2)O(6) units consisting of corner-sharing BO(3) triangles and BO(4) tetrahedra. The compound was obtained during an investigation of the Li-Cu-B-O system. In contrast to the triclinic form of Cu(3)B(2)O(6), the layers are linked to one another by BO(4) tetrahedra.
authors.affiliation: Nikolaev Institute of Inorganic Chemistry, SB Russian Academy of Sciences, Akademician Lavrentiev Prospekt 3, Novosibirsk 90, 630090, Russian Federation.
authors.forename: Natalia V
authors.initials: NV
authors.lastname: Kuratieva
authors.forename: Daria
authors.initials: D
authors.lastname: Mikhailova
authors.forename: Helmut
authors.initials: H
authors.lastname: Ehrenberg