The standard molar enthalpy of formation of crystalline di-isobutyldithiocarbamate complexes of P, As, Sb and Bi(III) has
been derived by solution calorimetry at 298.15 K. The corresponding standard molar enthalpies of sublimation were estimated
by means of differential scanning calorimetry. From the standard molar enthalpies of formation of the gaseous chelates the
homolytic and heterolytic mean metal-sulphur bond-dissociation enthalpies were calculated.