Calculations of the structural and thermodynamic characteristics of copper carbonates by quantum-chemical methods

The possibility of using the PM5 semiempirical method and the LADY program for calculations of the vibrational properties and thermodynamic characteristics of copper carbonates, malachite and azurite, was considered. The infrared and Raman spectra of these minerals were calculated using the valence force field model of the theory of crystal lattice dynamics with varying force constants. The results closely agreed with the calorimetric and spectroscopic experimental data.