CALCULATION OF HEAT CAPACITY BY THE METHOD OF NORMAL VIBRATION DISTRIBUTION OVER STRUCTURAL UNITS OF COMPLEX COORDINATION COMPOUNDS
The method of calculation proposed in this paper takes into account a stepwise contribution of normal vibration groups to heat capacity. These groups differ in bonds rigidity of structural units of a crystal under study. Calculations presented in the article were carried out using uranylcarbonates of some alkali metals as an example. Comparison of experimental and calculated data of heat capacity shows good agreement in the entire investigated area of thermal stability of compounds including phase transitions.