Mono and dinuclear Pd(II) complexes with pyrazole and imidazole-type ligands
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Data
2009-07-01
Autores
Lucca Neto, V. A. [UNESP]
Mauro, A. E.
Netto, A. V. G. [UNESP]
Moro, A. C. [UNESP]
Nogueira, V. M. [UNESP]
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Editor
Springer
Resumo
The cyanate-bridged cyclopalladated compound [Pd(C(2),N-dmba)(mu-NCO)](2) (dmba=N,N-dimethylbenzylamine) reacts in acetone with pyrazole (pz), 3,5-dimethylpyrazole (dmpz), imidazole (imz) and 2-methylimidazole (mimz) to give [Pd(2)(C(2),N-dmba)(2)(mu-NCO)(mu-pz)] (1), [Pd(2)(C(2),N-dmba)(2)(mu-NCO)(mu-dmpz)] (2), [Pd(C(2),N-dmba)(NCO)(imz)] (3) and [Pd(C(2),N-dmba)(NCO)(mimz)] (4), respectively. The compounds were characterized by elemental analysis, IR spectroscopy and TG. The thermal decomposition of the compounds occurs in three consecutive steps and the final decomposition products were identified as Pd(0) by X-ray powder diffraction. The thermal stability order of the complexes is 2 > 3 > 1 > 4.
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Palavras-chave
cyclopalladated compounds, imidazoles, pyrazoles, spectroscopy, thermal analysis
Como citar
Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 97, n. 1, p. 57-60, 2009.