Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Polish Journal of Chemistry

1 2005

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: silylated carboxylates

Sortuj według:

Ogranicz wyniki do:

Multinuclear NMR and Thermal Studies of New Silver(I) Silylated Carboxylates with Triphenylphosphine

Szłyk E., Szymańska I., Szczęsny R.

Polish Journal of Chemistry

2005

Vol. 79 / nr 4

627-635

Me3SiCH2COOAg, [Ag(Me3SiCH2COO)(PPh3)] and [Ag(Me3SiCH2CH2COO)(PPh3)] were prepared and characterized in solution by 1H, 13C, 29Si, 31P and 29Si, 31P CPMAS NMR. Spectral analysis suggests bidentate bridging carboxylates and monodentately bonded PPh3 in solution and in the solid state. Two crystallographically inequivalent molecules of PPh3 appeared in the solid state, what is evident from 31P CPMAS NMR. Thermal studies of both complexes demonstrate two stage decomposition process (exothermic followed by endothermic) with formation of metallic silver in the range 483-548 K. TGA/IR and MS studies of Me3SiCH2COOAg and [Ag(Me3SiCH2COO)(PPh3)] revealed volatile products of decomposition (CO2, Me3 Si-) and recombination reactions such as (Me3SiCH2CO)2O, (Me3Si)2O. The mechanism of complexes thermal decomposition is proposed.