Diborane (B2H6) is an example of an electron-deficient hydride. These hydrides do not have a sufficient number of electrons to form normal covalent bonds.
Electron deficient hydrides
The compounds in which the central atom has an incomplete octet are called electron-deficient hydrides.
- These types of compounds are normally formed by group 13 elements.
- The central atom cannot fulfil the octet rule.
Example BH3 and AlH3.These compounds generally exist in polymeric forms like B2H6, B4H10 etc.