Two novel pyrazole-derived ligands, 3-chloro-6-(3, 5-dimethyl-1H-pyrazol-1-yl) picolinic acid (CDPA) and 3-chloro-6-(3, 5-dimethyl-1H-pyrazol-1-yl)-N-phenylpicolinamide (CDPP) were prepared by 3, 6-dichloropicolinic acid (DCPA). Their complexes with terbium (III) and europium (III) were synthesized. The complexes were characterized by elemental analysis, infrared spectra, 1H NMR and TG–DTG. Furthermore, the above complexes using 1, 10- ...