Synthesis, FT-IR and DTA Studies of Mercury Complexes of Hydrazones

Abstract

N-Benzylidene-N-(2,4-dinitrophenyl)hydrazine (L¹) and dimetheyl-{4-[(4-nitro-2- nitrosophenyl)hydrazonomethyl]phenyl}amine (L²) were used as ligands for the synthesis of mercury(II) complexes. Vibrational study in the solid state of 2,4-dinitrophenyl hydrazine derivatives and its new mercury(II) complexes was performed by elemental analysis, IR, UVvis, ¹³C and ¹H NMR techniques. The changes observed between the spectra of the ligands and their mercury(II) complexes allowed to establish the coordination mode of the metal in complexes and the mechanism of C-H activation is discussed. Thermal properties, TG-DTA of these complexes were also studied.