New YMo{sub 3}B{sub 7} boride and its structure
Journal Article
·
· Crystallography Reports
OSTI ID:256472
- L`viv State Univ., L`viv (United Kingdom); and others
The crystal structure of YMo{sub 3}B{sub 7} boride is determined (a CAD-4 diffractometer, MoK{sub {alpha}} radiation, R = 0.019 for 668 reflections). The crystals are orthorhombic: a = 11.012(1) {Angstrom}, b = 3.1013(3) {Angstrom}, c = 12.864(1) {Angstrom}; Z = 4; {rho}{sub calc} = 6.839(2) g/cm{sup 3}; and sp. gr. Pnma. The structure belongs to a new type: metal atoms form trigonal prisms, within which boron atoms occur. Four columns of alternating empty orthorhombic [EMo{sub 4}Y] pyramids and [EMo{sub 2}Y{sub 2}] tetrahedra run in the b direction. The boron atoms form ribbons of six-membered rings. The ribbons are tilted to the ab plane. 8 refs., 3 figs.
- OSTI ID:
- 256472
- Journal Information:
- Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 3 Vol. 40; ISSN CYSTE3
- Country of Publication:
- United States
- Language:
- English
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