Abstract
The electron density distribution in (formula presented) has been obtained by the precise x-ray structure analysis on high-quality single crystals. A slight deficiency (formula presented) of Mg has been observed. The obtained sectional Fourier map in the B plane shows the triangle-shaped electron distribution extended along the B-B bonds, which indicates the typical (formula presented) orbitals of the boron atom. Further, the difference Fourier maps clearly reveal the (formula presented) covalent bonds within the B plane and (formula presented) orbitals perpendicular to the B plane. Both σ and π bonds construct the two-dimensional honeycomb network of the B atoms along the (001) plane. In contrast, there is no covalency between the B and Mg atoms, indicating the ionic bonds between B and Mg layers.
| Original language | English |
|---|---|
| Pages (from-to) | 1-4 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 65 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2002 Jan 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics