Structural and 1H, 13C, 15N NMR spectroscopic studies of Pd(II) chloride organometallics with 2-phenylpyridine and ammonia, pyridine or its methyl derivatives.

Pd(II) chloride organometallics with 2-phenylpyridine and pyridines of general formula [Pd(2ppy ∗ )LCl] (2ppy ∗ = C(2′)-deprotonated form of 2-phenylpyridine (2ppy), acting as N(1),C(2′)-chelating ligand; L = NH 3 , pyridine, 2-, 3-, 4-methylpyridine, 2,3-, 2,4-, 2,6-, 3,5-dimethylpyridine, 2,4,6-trimethylpyridine) were studied by 1 H, 13 C and 15 N NMR. 1 H, 13 C and 15 N NMR coordination shifts ( i.e. differences of chemical shifts for the same atom in the complex and ligand molecules) were discussed in relation to the molecular structures. Single crystal X-ray structure of trans (N,N)-[Pd(2ppy ∗ )(2,4,6col)Cl] was solved. The analysis of 15 N NMR coordination shifts for the whole series of the studied organometallics exhibited that all of them had an analogous trans (N,N) geometry. [ABSTRACT FROM AUTHOR]