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Complexation studies of Cu2+ ion with four new synthesized triazene ligands by spectrophotometric and conductometric methods

Mahmood Payehghadr, Homa Shafikhani, Hossain Tavalali, Abdol Mohammad Attaran, Mohammad Kazem Rofouei

Four new symmetric and asymmetric triazene ligands, ((E)-1,3-bis (2-ethoxyphenyl) triaze-1-ene (L1), (E)- 3-(4- chlorophenyl)1-(2-methoxyphenyl)triaze-1-ene (L2), (E)-1-(2-ethoxyphenyl)-3-(3- nitrophenyl) triaze-1-ene (L3) and (E)-1-(2-ethoxyphenyl)-3-(4-nitrophenyl) triaze-1-ene (L4)) have been synthesized and kf value of itÂ’s complexes with Cu2+ ion have been determined spectrophometric and conductrometric methods. Comprise of the kf data indicate that the stability of the complexes to vary in the order L1> L2> L3 > L4.