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Ba 1.63 La 7.39 Si 11 N 23 Cl 0.42 :Ce 3+ – A Nitridosilicate Chloride with a Zeolite‐Like Structure
Author(s) -
Schultz Peter,
Durach Dajana,
Schnick Wolfgang,
Oeckler Oliver
Publication year - 2016
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201600090
Subject(s) - crystallography , chloride , chemistry , valence (chemistry) , crystal structure , bond length , x ray crystallography , infrared spectroscopy , ion , space group , metathesis , diffraction , physics , organic chemistry , optics , polymerization , polymer
The nitridosilicate chloride Ba 1.63 La 7.39 Si 11 N 23 Cl 0.42 :Ce 3+ was synthesized by metathesis reaction starting from LaCl 3 , BaH 2 , CeF 3 and the product of the ammonolysis of Si 2 Cl 6 . The title compound is stable towards air and moisture. Diffraction data of a microcrystal were recorded using microfocused synchrotron radiation. X‐ray spectroscopy confirms the chemical composition of the crystal. IR spectra corroborate absence of N–H bonds. The compound is homeotypic to Ba 2 Nd 7 Si 11 N 23 and crystallizes in space group Cmmm with a = 11.009(3), b = 23.243(8), c = 9.706(4) Å and Z = 4, R 1 (all) = 0.0174. According to bond valence sum calculations, some crystallographic positions show complete occupancy by Ba or La whereas others contain significant amounts of both elements. In contrast to the structure prototype Ba 2 Nd 7 Si 11 N 23 , Ba 1.63 La 7.39 Si 11 N 23 Cl 0.42 :Ce 3+ contains chloride ions in channels of the SiN 4 tetrahedra network, hinting at various substitution possibilities of the complex zeolite‐like structure.