boride
Sign in to saveA boride is a compound between boron and a less electronegative element, for example silicon boride (SiB3 and SiB6). The borides are a large group of compounds that generally offer high melting points and are more covalent than ionic. Some borides exhibit useful physical properties. The term boride is also loosely applied to compounds such as B12As2 (N.B. arsenic has an electronegativity higher than boron) that is often referred to as icosahedral boride.
Article
7 sectionsContents
- Compounds
- Boron rich borides (B:M 4:1 or more)
- Metal rich borides (B:M less than 4:1)
- Boride structures
- See also
- References
- Books
A boride is a compound between boron and a less electronegative element, for example silicon boride (SiB3 and SiB6). The borides are a large group of compounds that generally offer high melting points and are more covalent than ionic. Some borides exhibit useful physical properties. The term boride is also loosely applied to compounds such as B12As2 (N.B. arsenic has an electronegativity higher than boron) that is often referred to as icosahedral boride.
==Compounds== The borides can be classified loosely as boron rich or metal rich, for example the compound YB66 at one extreme through to Nd2Fe14B at the other. The generally accepted definition is that if the ratio of boron atoms to metal atoms is 4:1 or more, the compound is boron rich; if it is less, then it is metal rich.