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Type: Artigo de periódico
Title: Thermochemical study of 4-(dimethylamino)pyridine complexes of some bivalent metal bromides
Author: Dunstan, PO
Khan, AM
Abstract: Interaction of some bivalent metal bromides with 4-(dimethylamino)pyridine in ethanol solution leads to the formation of complexes of general formula: [MBr2(dmapy)(n)] (where M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II) or Zn(II); dmapy = 4-(dimethylamino) pyridine; n = 0.75, 1, 1.25, or 2). Melting point measurements, elemental analysis, TG/DTG and DSC curves, and IR and electronic spectroscopy characterized the complexes. The measure of the enthalpies of solution of complexes, salts and ligand leads to the determination of several thermochemical parameters by the use of thermochemical cycles. The mean standard enthalpies of the metal-nitrogen coordinated bonds and the enthalpies of complex formation in the gaseous phase also were determined. (c) 2013 Elsevier Ltd. All rights reserved.
Subject: Thermochemical parameters
Coordinated bonds
Enthalpies of solution
Bivalent metal bromides
Enthalpies of formation
Country: Inglaterra
Editor: Academic Press Ltd- Elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.jct.2013.06.010
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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