The dipole moment ofπ-allyl complexes of palladium with the composition (RC3H4PdCl)2 and RC3H4PdCl (amine) were measured.
The moment of theπ-allyl-palladium bond is 2–2.5 D and is directed from the allyl to the Pd, i. e., the allyl group carries a positive charge in comparison with the metal atom.
The observed dipole moments of binuclear complexes agree with the assumption of a disruption of the planar character of the bridge Pd2Cl2 group in solution.
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Levanda, O.G., Kartsev, G.N., Ignat'eva, S.I. et al. Dipole moments of adducts of pyridine and γ-picoline with derivatives of π-allylpalladium chloride. Russ Chem Bull 24, 986–989 (1975). https://doi.org/10.1007/BF00922948
- Dipole Moment