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Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/131706
Título: 
Thermal analysis of coordination compounds. Part 3. Thermal decomposition of platinum complexes containing triphenylphosphine, triphenylarsine and triphenylstibine
Autor(es): 
Instituição: 
  • Universidade Federal de Viçosa (UFV)
  • Universidade Estadual Paulista (UNESP)
ISSN: 
0040-6031
Resumo: 
Studies by thermogravimetric analysis (TG) and differential thermal analysis (DTA) of the complexes [PtCl2L2] (L is PPh3, AsPh3, SbPh3), [PtLn] (n = 3, L is SbPh3; n = 4, L is PPh3, AsPh3); [(PtL3)2N2]; [(PtL3)2C2] and [Pt(CO)2L2] (L is SbPh3) are described. Analysis of the TG and DTA curves showed that Pt(II) complexes of the type [PtCl2L2] have a higher thermal stability than the corresponding Pt(0) complexes of the type [PtLn], with the exception of [Pt(SbPh3)3], which is more stable than [PtCl2(SbPh3)2]. Thermal stabilities of each of the complexes are compared with those of the others in the series. Mechanisms of thermal decomposition of complexes of the types [PtCl2L2] and [PtLn] are proposed. Residues of the samples were characterized by chemical tests and IR spectroscopy. The residue from the thermal decomposition of [PtCl2L2] (L is PPh3, AsPh3) and [Pt(PPh3)4] is metallic platinum. For [Pt(AsPh3)4] the residue is a mixture of Pt and As, whereas for the complexes containing SbPh3 the residues are mixtures of Pt and Sb. In these cases, the proportional contents of Pt and As or Pt and Sb correspond to the stoichiometry of these elements in the respective complexes. The complexes {[Pt(SbPh3)3]2N2}, {[Pt(SbPh3)3]2C2} lose N2 or the ethynediyl group at 130-150°C and are transformed into [Pt(SbPh3)3]. © 1995.
Data de publicação: 
1-Ago-1995
Citação: 
Thermochimica Acta, v. 259, n. 2, p. 277-286, 1995.
Duração: 
277-286
Publicador: 
Elsevier B.V.
Palavras-chaves: 
  • Platinum complexes
  • Thermal analysis
  • Thermal decomposition
  • Triphenylarsine
  • Triphenylphosphine
  • Triphenylstibine
Fonte: 
http://dx.doi.org/10.1016/0040-6031(94)02242-G
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/131706
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