Accession Number : AD0631994

Title :   ON THE FORMATION OF THE TETRAGONAL BORON MODIFICATIONS BY SUBSTITUTION OF THE BERYLLIUM ATOM IN THE B2B12 LATTICE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Becher,H. J.

Report Date : 15 MAR 1966

Pagination or Media Count : 14

Abstract : By heating BeB12 with BC13 in a closed tube, Be is substituted by B without changing of the crystal structure. The obtained boron is of > 99% purity and tetragonal structure. By this reaction the structural relation between BeB12 and the tetragonal boron modification was proved. IR examinations of alpha-boron, tetragonal boron and BeB12 allowed the assignment of internal vibrations of the B12-icosaedrons and of lattice vibrations. (Author)

Descriptors :   (*BORON, CRYSTAL STRUCTURE), BERYLLIUM, BORON COMPOUNDS, CRYSTAL LATTICES, EAST GERMANY, BORIDES, CHLORIDES, INFRARED SPECTRA

Subject Categories : Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE