Synthesis and structure of two new layered ternary nitrides, SrZrN{sub 2} and SrHfN{sub 2}
- Univ. of Nottingham (United Kingdom)
- Univ. of Birmingham, Edgbaston (United Kingdom)
The new ternary nitrides SrZrN{sub 2} have been synthesized by the solid state reactions of Sr{sub 2}N with ZrN and HfN and characterized by powder X-ray diffraction. Both nitrides form structures in the hexagonal space group R{bar 3}m (SrZrN{sub 2}, a = 3.37302(5) {angstrom}, c = 17.6756(3) {angstrom}, Z = 3; SrHfN{sub 2}, a = 3.34481(3) {angstrom}, c = 17.6779(2) {angstrom}, Z = 3) and are isostructural with {alpha}-NaFeO{sub 2}. The structures are constructed of alternating layers of strontium-nitrogen edge-sharing octahedra and either zirconium-nitrogen or hafnium-nitrogen edge-sharing octahedra stacked along the c axis. Alternatively, Sr{sup 2+} can be regarded as occupying octahedral holes between Zr(Hf)N{sub 2} octahedral layers. The title nitrides are essentially diamagnetic at room temperature, consistent with the chemical composition. These compounds are the first alkaline earth ternary nitrides observed to have the {alpha}-NaFeO{sub 2} layered structure.
- OSTI ID:
- 513363
- Journal Information:
- Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 26 Vol. 35; ISSN 0020-1669; ISSN INOCAJ
- Country of Publication:
- United States
- Language:
- English
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