Energy weighted maximum overlap

In spite of the very simple assumptions leading to this model, it leads to quite acceptable approximate values for electron binding energies for molecular species when compared with some other approximate approaches. This model has been applied under the name Energy Weighted Maximum Overlap (EWMO) to a number of problems involving photoelectron spectra and to a number of problems in the interpretation of spin resonance experiments. 

The g-tensor elements were calculated by a modified ab initio UHF method ( Nesbet ) [11], by a semiempirical SCF-MO calculation (integral approximations) [12], and by a semiempirical procedure called the energy weighted maximum overlap model [13]. 

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