Preparation, Characterization of Co(II), Ni(II),and Cu(II) New Schiff base complexes derived from acetoacetanilide Nadia Sadik Majeed Dep. Of Chemistry, College Of Education for Girls , University of kufa Abstract Solid metal complexes of Co(II), Ni(II),and Cu(II) have been preparation and characterization using anew Schiff base (ANPHA) derived from anew azo dye were β-[(p-(Nitrophenyl)azo] diketonilide and 4-aminoantipyrine were characterized by several techniques, including elemental analysis (C.H.N), molar conductance, magnetic measurements, electronic spectral and IR spectral studies. The data show that these complexes have composition of [ML 2 ] type. The electronic spectral, and magnetic susceptibility data of the complexes suggest octahedral geometry of all complexes, and the ligand (ANPHA) behaves mono basic tridentate manner, by coordination through the azomethine nitrogen atom and oxygen groups. Key words: Tridentate, Transition metal complexes , spectral studies. لخاصة اΔΒϠصϟ اΕاϧايو اΕاΪϘيص بعض معΨشΗ وήيπحΗ حثΒϟ اϦϤπΗ Co(II), Ni(II),and Cu(II) ΓΪيΪΠϟو اίا اΔغΒ صϦ مϖΘشϤϟ شف اΓΪاعϗ ΪϧاϜيϟ معβ-[(p-(Nitrophenyl)azo] diketonilide Ϊϗ وΔيϠوصيΘϟ واΔيسيρاϨغϤϟ اϡوΰعϟ واήاصϨعϠϟ ϖيϗΪϟ اϞيϠحΘϟ اΕياساϗ Ϧ مΕاΪϘعϤϟ اΖصΨ شيافρ واΔواريϤϟ ا هيΕاΪϘعϤϠϟ ΔيΒكيήΘϟصيغ اϟ اϥ أΔراسΪϟ اΖϨا بيϤاء. كήϤحϟ اΖحΗ Δف اأشعياρ وأΔيΠسϔϨΒϟ اϕوϔϟ اΔاشع اوعϧ Ϧ م[ML 2 ] يϧاϤثϟ اϞϜشϟ اΡήΘϗ اΔيسيρاϨغϤϟ اΔاسيحسϟ واΔيΠسϔϨΒϟ اϕوϔϟ اΔيف اأشعρ ائجΘϧ Ϧ م