Abstract:The basic-cell-state which can be used to describe the characteristic property of intermetallic compounds was constructed on the basis of new development in the basic-atom-state, and also a new method, one-cell-state-method, was established in terms of the basic-cell-state. To take Al₃Li as an example, how to use the new method to determine the electronic structure of the cell in intermetallic compounds is briefly introduced. The new method is valid for determination and analysis of the interatomicic charge transfer and the component of ionicity in chemical bond.

Key words: one-cell-state method　intermetallic compound　electronic structure　charge transfer　Al₃Li