Abstract
Three logarithmic interaction potential energy functions, suggested recently, have been employed to calculate the values of the cohesive energy, atomisation energy, force constant, IR absorption frequency, Debye temperature, pressure derivative of bulk modulus and the temperature derivative of the compressibility of 30 diatomic halide crystals. The values of the electron affinity of the halogen atoms have also been calculated with the help of these potential energy functions. The computed values of these parameters agree well with the available experimental data. The present calculations further establish the universality of the logarithmic potential energy functions.
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