Dipole moment function of LiH molecule

In the framework of the semiempirical method the dipole moment function of the LiH molecule being in the ground electronic state has been obtained. This function is represented in the piecewise continuous curve in a range of internuclear distances R = [0,infinity). The function has correct asymptotic behavior as for small as for large R and coincides with the experimental one in a vicinity of the equilibrium internuclear distance R-e. The experimental value of the second derivative of dipole moment function in the point R-e has been obtained, and the coefficient C-7 determining behavior of the dipole moment function for large R as C-7/R-7 was found.