engleski

Multinuclear NMR studies of palladium(II) dihalide complexes of dubutyl {;alpha-[4-(phenyldiazenyl)anilino]benzyl};phosphonate

The ^1H, ^13C, ^15N and ^31P NMR studies of two types of palladium(II) dihalide complexes of dibutyl {;alpha-[4-(phenyldiazenyl)anilino]benzyl};phosphonate are reported: those with the monodentate trans-bonded ligands through the azo nitrogen and a cyclopalladated binuclear complex in which chloride ions bridge two metal centers. The ^15N-enriched organophosphorus compound and its palladium(II) complexes were also prepared to enable unambiguous determination of the nitrogen ligation site by ^15N NMR. The NMR analysis was accomplished by one- and two-dimensional homo- and heteronuclear experiments. With the mononuclear complexes, the formation of isomeric species was observed, which are interpreted as rotational isomers caused by restricted rotation around the metal-ligand bound.

benzeneazoanilinophosphonate; palladium adduct; cyclopalladated complex; multinuclear NMR study; two dimensiona NMR

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