Thermal decomposition of palladium(ii) pyrazolyl complexes: Part II

• Autor(a) principal: Netto, Adelino Vieira de Godoy [UNESP]
• Data de Publicação: 2005
• Outros Autores: Santana, A. M. [UNESP], Mauro, Antonio Eduardo [UNESP], Frem, Regina Célia Galvão [UNESP], De Almeida, E. T., Crespi, Marisa Spirandeli [UNESP], Zorel, H. E.
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1007/s10973-005-0061-7; http://hdl.handle.net/11449/68240
• topic: DTA; Palladium(H); Pseudohalides; Pyrazoles; TG; Olefins; Organometallics; Polymerization; Pyrolysis; Solutions; X ray powder diffraction; Palladium(II); Palladium compounds

Thermal behavior of pyrazolyl complexes [PdCl2(HPz)2] (1), [PdCl2(HdmPz)2] (2), [Pd(SCN)2(HPz) 2] (3), [Pd(SCN)2(HdmPz)2] (4), [Pd(N 3)2(HdmPz)2] (5), [Pd(PzNHCO)2] (6) and [Pd(dmPzNHCO)2] (7) (HPz=pyrazole, HdmPz=3,5-dimethylpyrazole) has been studied by TG and DTA. In general, the thermal stability of [PdX 2(HL)2] (HL=HPz, HdmPz) compounds varies in the following order: HdmPz>HPz as well, according to the trends X=Cl ->SOT->NNN-. Except for 5, the [PdX 2(HL)2] complexes showed higher thermal stability than the 6 and 7 chelates. No stable intermediates were isolated during the thermal decompositions because of the overlapping degradation processes. The final products of the thermal decompositions were identified as metallic palladium by X-ray powder diffraction. © 2005 Akadémiai Kiadó, Budapest.