Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/58091
Type: Artigo de periódico
Title: Thermochemistry of adducts of some bivalent transition metal bromides with triphenylphosphine
Author: Dunstan, PO
Abstract: The compounds [MBrm(L)(n)] (where M is Mn(II), Fe(H), Co(lI), Ni(II), Cu(I) or Zn(II); L = triphenyphosphine (tpp); m = 1 or 2; n = 1.5, 2 or 3) were synthesized and characterized by melting points, elemental analysis, thermal analysis and electronic and IR spectroscopy. The enthalpies of dissolution of the adducts, metal(II) bromides and triphenylphosphine in methanol or in a solution of 10% (v/v) triethanolamine, 40% (v/v) acetonitrile and 50% (v/v) 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(r)H(theta)), the standard enthalpies of formation (Delta(f)H(theta)), the standard enthalpies of decomposition (Delta(D)H(theta)), the lattice standard enthalpies (Delta(M)H(theta)) and the standard enthalpies of the Lewis acid/base reaction in the gaseous phase (Delta(r)H(theta)(g)). The mean bond dissociation enthalpies of the metal (II)-phosphorus bonds ((D) over bar ((M-P))) have been estimated. (C) 2005 Elsevier B.V All rights reserved.
Subject: metal bromides
transition metals
thermochemistry
metal(II)-phosphorus bonds
dissolution enthalpies
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.tca.2005.06.016
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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