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Type: Artigo de periódico
Title: Thermochemistry of adducts of tin(IV) chloride with amides and thioamides
Author: Dunstan, PO
Abstract: The compounds [SnCl4(L)(2)] (where L is urea (u), 1,1-dimethylurea (1,1-dmu), 1,3-dimethylurea (1,3-dmu), tetramethylurea (tmu), thiourea (tu), tetramethylthiourea (tmtu) or 1-allyl-2-thiorea (atu)) were synthesized and characterized by melting points, elemental analysis, thermal studies and IR spectroscopy. The enthalpies of dissolution of the adducts, tin(IV) chloride 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 reactions (Delta(r)H(0)), the standard enthalpies of formation (Delta(f)H(0)), the standard enthalpies of decomposition (Delta(D)H(0)) the lattice standard enthalpies (Delta(M)H(0)) and the standard enthalpies of the Lewis acid/base reactions in the gaseous phase (Delta(r)H(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) 2000 Elsevier Science B.V. All rights reserved.
Subject: tin(IV)
tin(IV) chloride
Sn-O and Sn-S bonds
thermochemical parameters
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0040-6031(99)00400-1
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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