title: Synthesis and characterization of the new strontium borogermanate Sr(3-x/2)B(2-x)Ge(4+x)O₁₄ (x = 0.32).
abstract: The strontium borogermanate Sr(3-x/2)B(2-x)Ge(4+x)O14 (x = 0.32) was synthesized by high-temperature solid-state reaction of SrO, GeO2, and H3BO3 in a NaF/KF flux system using platinum crucibles. The structure determination revealed that Sr(3-x/2)B(2-x)Ge(4+x)O14 (x = 0.32) crystallizes in the trigonal space group P321 (No. 150) with the parameters a = 800.7(2) and c = 488.8(2) pm, with R1 = 0.0281, wR2 = 0.0671 (all data), and Z = 1. The crystal structure of Sr(3-x/2)B(2-x)Ge(4+x)O14 (x = 0.32) consists of distorted SrO8 cubes, GeO6 octahedra, GeO4 tetrahedra, and BO4 tetrahedra. In addition to the structural investigations, Raman and IR spectroscopic investigations were carried out.
authors.affiliation: Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck , Innrain 80-82, A-6020 Innsbruck, Austria.
authors.forename: Benedikt
authors.initials: B
authors.lastname: Petermüller
authors.forename: Lucas L
authors.initials: LL
authors.lastname: Petschnig
authors.forename: Klaus
authors.initials: K
authors.lastname: Wurst
authors.forename: Gunter
authors.initials: G
authors.lastname: Heymann
authors.forename: Hubert
authors.initials: H
authors.lastname: Huppertz