Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/58105
Type: Artigo de periódico
Title: THERMOCHEMISTRY OF COMPLEXES OF PYRIDINE AND PICOLINES WITH PHENYLDIHALOARSINES
Author: DUNSTAN, PO
Abstract: The complexes PhAsX2.L, where L = pyridine (py), beta- or gamma-picoline (beta- or gamma-pico) and X = Cl, Br or I, were synthesized and characterized by melting point, elemental analysis, thermogravimetric studies and infrared spectroscopy. The standard enthalpies (DELTA(r)H-kelvin) for the Lewis acid/base reactions were determined from the enthalpies of dissolution in 25% ethanolamine in ethanol of the complexes, phenyldihaloarsines and ligands at 298.15 K. The following thermochemical parameters for the complexes were calculated from DELTA(r)H-kelvin values and thermochemical cycles: the standard enthalpies of formation (DELTA(f)H-kelvin), the standard enthalpies of decomposition (DELTA(D)H-kelvin), the lattice standard enthalpies (DELTA(M)H-kelvin) and the standard enthalpies of the Lewis acid/base reactions in the gaseous phase (DELTA(r)H-kelvin(g)). The mean standard enthalpies of arsenic-nitrogen bonds (DBAR(As-N)) were estimated.
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/0040-6031(92)87051-B
Date Issue: 1992
Appears in Collections:Unicamp - Artigos e Outros Documentos

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