The First High-Pressure Chromium Oxonitridoborate CrB4O6N-an Unexpected Link to Nitridosilicate-Chemistry

Fuchs, Birgit; Johrendt, Dirk; Bayarjargal, Lkhamsuren und Huppertz, Hubert (2021): The First High-Pressure Chromium Oxonitridoborate CrB4O6N-an Unexpected Link to Nitridosilicate-Chemistry. In: Angewandte Chemie-International Edition, Bd. 60, Nr. 40: S. 21801-21806

Abstract

CrB4O6N crystallizes in the non-centrosymmetric space group P6(3)mc (no. 186) with the lattice parameters a=5.1036(1), c=8.3519(3) angstrom, and a volume of 188.40(1) angstrom(3). It was synthesized in a high-pressure/high-temperature experiment at 7 GPa and 1673 K and represents the first high-pressure oxonitridoborate. It is built up of starlike-shaped entities of four BO3N tetrahedra, connected via one common nitrogen atom that resembles the fourfold-coordinated nitrogen atoms in the homeotypic nitridosilicates MYbSi4N7 (M=Sr, Ba). Building up a network with channels that contain the Cr3+ ions, CrB4O6N contains for the first time a tetrahedral building unit in contrast to trigonal planar B(O/N)(3) entities in all other known oxonitridoborates. The structural relations as well as the results of spectroscopic measurements and calculations on the chromium oxonitridoborate are discussed.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie > Department Chemie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 1433-7851
• Sprache: Englisch