Three new reduced Schiff base derived from o-vanillin and amino acids such as alanine, leucine, and phenylalanine are prepared through condensation, reduction, and acidification. Their Ni(Ⅱ) complexes are also synthesized by the reduction of Schiff base, respectively.All new synthesized compounds are characterized by element analysis, atomic absorption spectrophotometry, and infrared spectra. Meanwhile the thermal stability and DRS UV/Vis of three complexes are also studied.
