Data di Pubblicazione:
2014
Citazione:
An Unprecedented Trimeric Palladium(0) Complex with Bridging Nitrogen Ligands / F. Ragaini, F. Ferretti, R. Gini, P. Macchi. ((Intervento presentato al 25. convegno Congresso Nazionale della Società Chimica Italiana tenutosi a Arcavacata di Rende nel 2014.
Abstract:
While studying the deactivation of the palladium catalyst in the CO/styrene copolymerization reaction, we got kinetic evidence for the formation of Pd(Ar-BIAN)(styrene) complexes. We thus attempted preparing such complexes by reacting a Pd(II) precursor in the presence of the olefin and a reduced Ar-BIAN compound of a type recently developed by us. Although the desired complex is apparently intermediately formed, it decomposed to a complex whose identity was independent of the olefin employed. Characterization of this complex by X-ray diffraction showed it to be an unprecedented Pd(0) trimer in which each palladium atom is normally coordinated to an Ar-BIAN molecule (eta-1 to both N atoms) and unusually eta-2 coordinated to the C=N double bond of another Ar-BIAN molecule, which is in turn normally coordinated to a second Pd atom and so on until the cycle is closed as a trimer.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Keywords:
Palladium complex; Nitrogen ligands; bisimine
Elenco autori:
F. Ragaini, F. Ferretti, R. Gini, P. Macchi
Link alla scheda completa: