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2. Three N2O2 ligands derived from the condensation of 1,2-cyclohexanediaminewith salicylaldehyde, acetylacetone and benzoylacetone.

Author

Ribeiro da Silva, Maria D. M. C., Araújo, N. R. M., Silva, A. L. R., da Silva, L. C. M., Barros, N. P. S. M., Gonçalves, J. M., and Ribeiro da Silva, M. A. V.

Subjects
ENTHALPY, SCHIFF bases, CALORIMETRY, OXYGEN, SUBLIMATION (Chemistry)
Abstract

The standard ( p 0=0.1 MPa) molar enthalpies of formation, at T=298.15 K, in the gaseous phase, for three tetradentate Schiff bases involving a N2O2 set, N, N’-bis(salicylaldehydo)cyclohexanediimine (H2salch), N, N’-bis(acetylacetone)cyclohexanediimine (H2acacch) and N, N’-bis(benzoylacetone)cyclohexanediimine (H2bzacch), were determined from their enthalpies of combustion and sublimation, obtained by static bomb calorimetry in oxygen and by the Knudsen effusion technique, respectively. The results are compared with identical parameters for related compounds previously studied, resulting from the condensation of salicylaldehyde or β-diketone with aliphatic diamines. [ABSTRACT FROM AUTHOR]

Published
2007
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4. [Nutrition disorders in early infancy].

Author

DA ROCHA JM, FADUL E, DA SILVA LC, APIS W, TERRA WD, HENRIQUES RA, and OLIVEIRA Hde S

Subjects
Humans, Infant Nutrition Disorders
Published
1953

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