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Journal of Thermal Analysis and Calorimetry
Authors:
J. Botelho
,
A. Souza
,
L. Nunes
,
A. Chagas
,
I. Garcia dos Santos
,
M. da Conceição
, and
P. Dunstan

Abstract  

The standard molar enthalpies of formation of crystalline dialkyldithiocarbamates chelates, [Pd(S2CNR2)2], with R=C2H5, n-C3H7, n-C4H9 and i-C4H9, were determined through reaction-solution calorimetry in acetone, at 298.15 K. From the standard molar enthalpies of formation of the gaseous chelates, the homolytic (172.43.8, 182.53.2,150.93.1 and 162.63.1 kJ mol−1) and heterolytic (745.03.8, 803.73.3,834.33.1 and 735.23.0 kJ mol−1) mean palladium-sulphur bond-dissociation enthalpies were calculated.

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Journal of Thermal Analysis and Calorimetry
Authors:
J. Regis Botelho
,
A. Duarte Gondim
,
I. Garcia dos Santos
,
P. Dunstan
,
A. Souza
,
V. Fernandes
, and
A. Araújo

Abstract  

The standard molar enthalpy of formation of crystalline dialkyldithiocarbamate chelates, [Pd(S2CNR2)2], with R=CH3 and i-C3H7, was determined through reaction-solution calorimetry in 1,2-dichloroethane, at 298 K. Using the standard molar enthalpies of formation of the gaseous chelates, the homolytic (52618 and 66610) and heterolytic (269318 and 295710 kJ mol-1) mean enthalpies of palladium-sulphur bond dissociation were calculated.

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