In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2017, No. 7 ( 2017-02-17), p. 1067-1074
Abstract:
The quaternary nitrides CaMg 2 GaN 3 and CaMg 2 Ga 2 N 4 were synthesized by means of solid‐state metathesis reactions. The crystal structures of both nitridomagnesogallates contain layers made up of either tetrahedral M N 4 units (CaMg 2 Ga 2 N 4 ) or both tetrahedral M N 4 units and planar M N 3 triangles (CaMg 2 GaN 3 ) with mixed occupation of central atoms Mg and Ga. CaMg 2 GaN 3 was obtained as a gray powder. Its crystal structure was determined on the basis of X‐ray powder diffraction data [ P 6 3 / mmc (no. 194), a = 3.43093(8), c = 17.3989(5) Å, V = 177.368(9) Å 3 , Z = 2]. The compound is isotypic with CaMg 2 AlN 3 and homeotypic with Ca 2 Mg 5 GeN 6 , ScAl 3 C 3 , and UAl 3 C 3 . The crystal structure of CaMg 2 Ga 2 N 4 [ P 3 m 1(no. 164), a = 3.3859(3), c = 11.2378(11) Å, V = 111.57(2) Å 3 , Z = 1] was determined from single‐crystal X‐ray diffraction data and corroborated by Rietveld refinement. TEM investigations confirmed the metrics of both crystal structures and indicate the presence of both compounds as side products within one reaction batch. Structural similarities between CaMg 2 GaN 3 and CaMg 2 Ga 2 N 4 are discussed.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2017.7
DOI:
10.1002/ejic.201601381
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
1475009-0
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