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|Type:||Artigo de periódico|
|Title:||Synthesis, characterization and a thermogravimetric study of copper, cobalt and tin mono- and bis-adducts with ethyleneurea, ethylenethiourea and propyleneurea|
|Author:||de Farias, RF|
|Abstract:||This paper describes the synthesis, characterization and a thermogravimetric (t.g.) study of 11 adducts of general formula MCl2. nL(M=Cu, Co and Sn; n=1 and 2 for Sn, and 2 for Cu and Co; L=ethyleneurea eu, ethylenethiourea etu, and propyleneurea pu). The i.r. results shows that the eu and pu adducts are coordinated through oxygen, whereas for etu nitrogen is the coordination site. The Deltav(C=O) or Deltav(C=S) trend is: Cu>Co>Sn. The t.g. curves show that the adducts release ligand molecules in a single mass loss step. As regards considering adducts with the same stoichiometry, the observed thermal stability trend is: etu>pu>eu.|
|Editor:||Kluwer Academic Publ|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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