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2005
Structure
D 2000
06- 007
(Sr3N)E and (Ba3N)E (E: Sb, Bi): Synthesis, Crystal Structures, and Physical
Properties. — Single phase powders of (Sr3N)Sb, (Sr 3N)Bi, (Ba3N)Sb and (Ba3N)Bi
are prepared by melting 1:3 mixtures of Sb(Bi) and Sr(Ba) followed by annealing of
the produced metallic reguli in N2 atmosphere at 1070—1120 K. (Sr3N)Sb and (Sr3N)Bi
crystallize in the cubic anti-perovskite type structure (space group Pm3m, Z = 1) and
(Ba3N)Sb and (Ba3N)Bi crystallize in the hexagonal anti-BaNiO3 type structure
(P63/mmc, Z = 2). Magnetic susceptibility and electrical resistivity data indicate that
the compounds are diamagnetic semiconductors. The optical band gaps of (Sr3N)Sb
and (Sr3N)Bi are determined to be 1.15 and 0.89 eV, respectively. The experimental
results are in agreement with electronic structure calculations. — (GAEBLER, F.;
KIRCHNER, M.; SCHNELLE, W.; SCHWARZ, U.; SCHMITT, M.; ROSNER, H.;
NIEWA*, R.; Z. Anorg. Allg. Chem. 630 (2004) 13-14, 2292-2298; MPI Chem. Phys.
fester Stoffe, D-01187 Dresden, Germany; Eng.) — Schramke
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