Add time:07/13/2019         Source:sciencedirect.com

The standard formation enthalpy (298 K) of tris(diethyldithiocarbamato)cobalt(III) has been derived by solution calorimetry as ΔfH⊖m(Co[S2CN(C2H5)2]3) = −233.8 ± 20 kJ mol−1. The thermochemical measurements are based on a ligand-exchange reaction involving the complete displacement of pentane-2,4-dionate in tris(pentane-2,4-dionato)cobalt(III) by the diethyldithiocarbamato anion. The homolytic thermochemical bond dissociation enthalpy, 〈D〉(Co-S), has subsequently been calculated as 200 ± 25 kJ. These thermo-chemical data are assessed in conjunction with the corresponding data for the bis(diethyl- dithiocarbamato)nickel(II), -copper(II) and -zinc(II) complexes.

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