Abstract
A series of complexes of ortho, meta and para substituted dibenzoylmethane(DBM) with lanthanides(Ln) have been synthesized and the induced shifts in H-1 NMR spectra on n-pentanol have been studied. The studies of the shift behaviour of trivalent lanthanide complexes of dibenzoylmethane on n-pentanol shows that the meta substitution of halogens has more shift effect compared to ortho and para substitution. It has been observed that the induced shift of the protons of n-pentanol decreases along the series CCl4 > CDCl3 > C6D6 > (CD3)(2)CO.