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Enthalpies of formation of crystalline dimethyldithiocarbamate complexes of chromium(III) and iron(III): the estimation of the mean M–S bond-dissociation enthalpies

✍ Scribed by Manuel A.V. Ribeiro da Silva; Ana M.M.V. Reis; Margarida M.R. Ferreira da Silva

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
93 KB
Volume
32
Category
Article
ISSN
0021-9614

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✦ Synopsis

The standard ( p o = 0.1 MPa) molar enthalpies of formation of crystalline dimethyldithiocarbamate complexes of Cr(III) and Fe(III) were determined, at the temperature 298.15 K, by solution-reaction calorimetry. From these values, and estimated values for the standard enthalpies of sublimation of the complexes, the mean molar bond-dissociation enthalpies D m (M-S) were estimated.

Cr{S 2 CN(CH 3 ) 2 } 3 (cr) -283.8 ± 11.9 202 ± 5 Fe{S 2 CN(CH 3 ) 2 } 3 (cr) -145.8 ± 8.1 183 ± 5

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