CaNi/sub 12/B/sub 6/: a new boride of the SrNi/sub 12/B/sub 6/ structure type
The structure of CaNi/sub 12/B/sub 6/ has been examined from the diffraction pattern (DRON-3.0, Cu K/sub ..cap alpha../ radiation). When the pattern had been indexed to the hexagonal system, the cell parameters were found as ..cap alpha.. = 9.542 (3); c = 7.420 (3) A. The coordinates of the Ca and Ni atoms were refined via the PMNK program with an SM-4 computer, with the initial coordinates those for the metal atoms in SrNi/sub 12/B/sub 6/. The coordinates of the boron atoms were not refined, being taken the same as in SrNi/sub 12/B/sub 6/. The final values for the coordinates (space group R3m) are Ca at 3 (..cap alpha..) 000, B = 3.3 (5) A/sup 2/; 18 Nil at 18 (g) (x = 0.369(2)), B = 0.7(1) A/sup 2/; 18Ni2 at 18 (h) (x = 0.426(1), z = 0.031(2)), B = 0.5(1) A/sup 2/; 18B at 18 (h) (x = 0.191, z = 0.042), B = 3.3(5) A/sup 2/. The intensities were calculated for these coordinates, reliability factor R = 0.108
- Research Organization:
- I. Franko L'vov State Univ. (USSR)
- OSTI ID:
- 5185946
- Journal Information:
- Inorg. Mater. (Engl. Transl.); (United States), Vol. 23:6; Other Information: Translated from Izv. Akad. Nauk SSSR, Neorg, Mater.; 23: No. 6, 1033-1035(Jun 1987)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis by hydrogen-driven disproportionation reactions. Synthesis and structure of the hexazirconium dodecahalide clusters Zr/sub 6/Cl/sub 12/ and Zr/sub 6/Br/sub 12/ and the double salt Zr/sub 6/Cl/sub 12/. M/sub 2/ZrCl/sub 6/(M = Na, K, Cs)
Study of /sup 11/B induced single-nucleon transfer reactions on /sup 40/Ca and cross section measurements for the 11. 08 MeV (3/sup +/) and 11. 096 MeV (4/sup +/) states in /sup 16/O populated by /sup 12/C(/sup 6/Li,d) and /sup 13/C(/sup 6/Li,t) reactions
Related Subjects
CALCIUM BORIDES
HEXAGONAL LATTICES
NICKEL BORIDES
COMPUTERIZED SIMULATION
INTERATOMIC DISTANCES
LATTICE PARAMETERS
PHASE STUDIES
STRONTIUM BORIDES
SYNTHESIS
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
BORIDES
BORON COMPOUNDS
CALCIUM COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DISTANCE
NICKEL COMPOUNDS
SCATTERING
SIMULATION
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies