Reactions of allylpalladium chloride dimer with neutral ligands (L = RN:CHNHR, R = PhCH2, p-MeC6H4, p-ClC6H4; L = RN:NHR, R = p-MeC6H4, p-ClC6H4) afford bridge splitting products PdClL(1,3--C3H5). Variable temp. 1H and 13C NMR spectra show 2 dynamic processes in soln. The first one, operating at room temp., involves the dissocn. of the neutral ligand L; the second one, which has a lower activation energy, is concn. dependent and involves chloride-L exchange, probably via a pentacoordinated chloro bridge species. The influence of the basicity of the ligands on the activation energies of the processes is discussed.
Fluxional behavior of allylpalladium(II) derivatives of N,N'-diarylformamidines and 1,3-diaryltriazenes
TONIOLO, Luigi;
1979-01-01
Abstract
Reactions of allylpalladium chloride dimer with neutral ligands (L = RN:CHNHR, R = PhCH2, p-MeC6H4, p-ClC6H4; L = RN:NHR, R = p-MeC6H4, p-ClC6H4) afford bridge splitting products PdClL(1,3--C3H5). Variable temp. 1H and 13C NMR spectra show 2 dynamic processes in soln. The first one, operating at room temp., involves the dissocn. of the neutral ligand L; the second one, which has a lower activation energy, is concn. dependent and involves chloride-L exchange, probably via a pentacoordinated chloro bridge species. The influence of the basicity of the ligands on the activation energies of the processes is discussed.File in questo prodotto:
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