Thermal properties of metal-metal bonded Pd(I) complexes supported onto porous Vycor glass.
An Acad Bras Cienc
; 80(2): 263-9, 2008 Jun.
Article
en En
| MEDLINE
| ID: mdl-18506252
Thermal behavior of the complexes Pd2(dppm)2Cl2, Pd2(dppm)2(SnCl3)Cl and Pd2(dppm)2(SnCl3)2 (dppm=bis[diphenylphosphino(methane)], ((C6H5)2PCH2P(C6H5)2) in the solid state and immobilized onto porous Vycor glass was studied. Similar decomposition mechanisms were observed for the solid and immobilized complexes, with a small thermal stabilization upon immobilization. The decomposition products were characterized by X-ray diffractometry, Raman and diffuse reflectance infrared spectroscopy, which indicated the presence of a mixture of metallic palladium and oxidized species such as PdO,condensed phosphates, SnO2 and SnP2O7. According to X-ray diffractometry, the decomposition products of the immobilized complexes presented higher amounts of PdO than the solid-state residues, probably as an effect of interactions with silanol groups present in the glass surface.
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
An Acad Bras Cienc
Año:
2008
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Brasil