Abstract

The carbon-13 magnetic resonance spectra of N,N-dimethyl-4-(2-pyridylazo)benzeneamine, (pyridine 2-azo-paradimethylaniline, PADA), and of the 1:1 complex with zinc(II) ions, in the presence and absence of nickel(II) ions, have been obtained. Resonances have been assigned based on established or modified additivity rules. The spectra are interpreted as being consistent with the ligand binding as a trans isomer and are compatible with the normal mechanism of binding inferred from kinetic results.

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