Abstract
The electron deformation density of Li(,2)BeF(,4) was investigated with respect to a description of purely covalent bonding. X-ray diffraction data was collected from a single Li(,2)BeF(,4) crystal in the range 0.0 sin (theta)/(lamda) (LESSTHEQ) 1.20(ANGSTROM)('-1). The expected Be-F covalent bonding interaction was found; however, no support was found for covalent bonding between Li and F. An electron deformation density study was done based on the x-ray diffraction data for CaBe(,13). There is clear evidence of multicenter bonding within the polyhedral array of beryllium atoms. No evidence was found for the participation of calcium in a pattern of directed bonding. X-ray diffraction data was collected for the intermetallic compound MoBe(,12) in the range 0 < sin (theta)/(lamda) (LESSTHEQ) 1.25(ANGSTROM)('-1). The electron deformation density showed multicenter bonding in the polyhedral array of beryllium atoms. Also, in evidence was directed bonding involving the Mo atom. The structure of a compound containing rhenium and beryllium was determined. The face centered cubic structure has only partial occupancy at the rhenium positions and is formulated as Re(,0.92)Be(,16).
Mahar, Martin Cajeta (1983). The electron density in beryllium intermetallic compounds. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -537968.