The First High-Pressure Chromium Oxonitridoborate CrB4 O6 N-an Unexpected Link to Nitridosilicate Chemistry.
Angew Chem Int Ed Engl
; 60(40): 21801-21806, 2021 Sep 27.
Article
in En
| MEDLINE
| ID: mdl-34382328
ABSTRACT
CrB4 O6 N crystallizes in the non-centrosymmetric space group P63 mc (no. 186) with the lattice parameters a=5.1036(1), c=8.3519(3)â
Å, and a volume of 188.40(1)â
Å3 . It was synthesized in a high-pressure/high-temperature experiment at 7â
GPa and 1673â
K and represents the first high-pressure oxonitridoborate. It is built up of starlike-shaped entities of four BO3 N tetrahedra, connected via one common nitrogen atom that resembles the fourfold-coordinated nitrogen atoms in the homeotypic nitridosilicates MYbSi4 N7 (M=Sr, Ba). Building up a network with channels that contain the Cr3+ ions, CrB4 O6 N 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.
Full text:
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Angew Chem Int Ed Engl
Year:
2021
Document type:
Article
Affiliation country:
Austria