Data on thermochemistry of hexahalogenotitanates from the literature a
re reviewed and discussed. Mutual relations between heats of formation
and thermal dissociation, as well as lattice energies of the salts re
sulting from the thermochemical cycle enabled determination of unknown
characteristics. Lattice energetics-was also examined following the K
apustinskii-Yatsimirskii approach. The combination of the latter metho
d with relations arising from the thermochemical cycle, afforded infor
mation on the influence of dimensions of ions on the thermodynamic sta
bility of the compounds with respect to dissociation and oxidation pro
cesses.