Accession Number : AD0608986

Title :   CRYSTAL CHEMISTRY OF ALPHA BORON DERIVATIVES.

Descriptive Note : Technical rept. no. 6,

Corporate Author : CARBORUNDUM CO NIAGARA FALLS N Y

Personal Author(s) : Economy,J. ; Matkovich,V. I. ; Giese,R. F. ,Jr.

Report Date : NOV 1964

Pagination or Media Count : 22

Abstract : Assignment of stoichiometry to interstitial compounds is discussed. It is shown that multiple stoichiometries can occur within the same structural framework where more than one type of interstitial opening is available. These principles are used to clarify the confusion which currently exists in the isotypic series of interstitial compounds derived from alpha boron. With respect to occupancy of interstitial sites three distinct stoichiometries can exist in this isotypic group; namely, B12 X2Y (B12X3), B12X2 and B12X. Data are presented on (1) a new form of boron carbide (B12C2), (2) a new alpha boron derivative containing interstitial aluminum (B12C2A1), (3) identification and differentiation of two boron subphosphides (B12P2 and B13P2), (4) preparation of boron subarsenide, and (5) relationship between metal dodecaborides and alpha boron derivatives. (Author)

Descriptors :   (*BORON COMPOUNDS, CRYSTAL STRUCTURE), (*CRYSTAL STRUCTURE, CHEMICAL ANALYSIS), MOLECULAR WEIGHT, ATOMIC PROPERTIES, CARBIDES, PHOSPHIDES, ARSENIDES, ALUMINUM COMPOUNDS, SILICIDES, SULFIDES, BORIDES, TRANSITION METALS, CRYSTAL LATTICES, CHEMICAL REACTIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE