Alkaline Earth Metal Nitride Chalcogenides, Ca6N2Se3, Sr6N2Se3 and Sr6N2Te3
Abstract
Abstract The novel isotypic hexagonal alkaline earth metal nitride chalcogenides Ca 6 N 2 Se 3 , Sr 6 N 2 Se 3 and Sr 6 N 2 Te 3 ( R (No.167); Z =6) were synthesized from Ca(Sr)/Na flux at 1173 K. The compounds belong to the rare class of ternary metal nitride chalcogenides. The structures feature the shortest Ca/Sr−N bonds within the regular trigonal antiprismatic coordination (Ca−N: 235.17(8); Sr−N: 251.20(6) pm). Two crystallographic distinct nitrogen atoms are coordinated in a trigonal antiprism and a twisted trigonal prism, respectively, and are alternatively condensed via trigonal trans‐faces to form one‐dimensional chains . The chalcogenide ions in comparison realize rather ambiguous environments. Raman spectroscopic data are reported.
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