Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/58093
Type: Artigo de periódico
Title: Thermochemistry of adducts of tin(IV) bromide with amide and thioamide ligands
Author: Dunstan, PO
Abstract: The compounds SnBr4. nL (where L is urea (u), 1,1-dimethylurea (1,1-dmu). 1,3-dimethylurea (1,3-dmu), tetramethylurea (tmu), thiourea (tu), tetramethylthiourea (tmu) or 1-allyl-2-thiourea (atu) and n = 2, 3 or 4) were synthesized and characterized by melting points, elemental analysis, thermal analysis and IR spectroscopy. The enthalpies of dissolution of the adducts, tin(IV) bromide and ligands in methanol were measured and by using thermochemical cycles the following thermochemical parameters for the adducts have been determined: the standard enthalpies for the Lewis acid/base reaction (Delta H-r(0)); the standard enthalpies of formation (Delta H-f(0)) the standard enthalpies of decomposition (Delta H-D(0)); the lattice standard enthalpies (Delta H-M(0)) and the standard enthalpies of the Lewis acid/base reaction in the gaseous phase (Delta H-r(0)(g)). The mean standard enthalpies of the tin-oxygen ((D) over bar ((Sn-O))) and tin-sulphur ((D) over bar ((Sn-S))) bonds have been estimated. (C) 2001 Elsevier Science B.V. All rights reserved.
Subject: tin(IV)
tin(IV) bromide
Sn-O and Sn-S bonds
thermochemical parameters
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0040-6031(00)00740-1
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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