Synthesis and photochemistry of binary and mixed ligand complexes of copper(II) containing 5-arylazo-8-hydroxyquinoline derivatives and alkyl xanthates

Abstract

Mixed ligand complexes of the type K[Cu(x-HQA)Rxan] [x-HQA = 5-arylazo-8-hydroxyquinoline derivatives; Rxan = methyl or ethylxanthate] have been prepared and characterised by elemental analysis, spectral measurements and conductivity. Upon irradiation, solutions of these complexes photoeliminate dinitrogen and a mechanism for this reaction is proposed. The photosensitivity of the oxine ligand was found to be responsible for the observed photolysis of the complexes.

Synthesis and Characterization of Cobalt(II) and Nickel(II) Complexes of Some Schiff Bases Derived from 3-hydrazino-6-methyl[1,2,4] triazin-5(4H)one

“…Synthesis of new Schiff bases and their metal complexes still the aim of many recent investigations [4][5][6]. Therefore, and in continuation of our previous studies on characterization of transition metal complexes [7][8][9], the present investigation deals with the synthesis, characterization and photochemical studies of cobalt(II) and nickel(II) complexes of Schiff bases derived from condensation of 3-hydrazino-6-methyl [1,2,4]-triazin-5(4H)one and some aromatic aldehydes ( Figure 1). …”

Synthesis, Characterization, and Photochemical Studies of Some Copper Complexes of Schiff Bases Derived from 3‐Hydrazino‐6‐methyl[1,2,4]triazin‐5(4H)one

“…This is manifested by the huge number of publications ranging from the purely synthetic [1,2] to modern physical and biochemical relevant studies of Schiff base complexes. [3 -6] To the best of our knowledge, no work has been done on the metal complexes of Schiff bases derived from 3-hydrazino-6-methyl [1,2,4]triazin-5(4H) one, and as a continuation of our previous studies on photochemical and thermal behavior of transition metal complexes, [7,8] the present investigation reports synthesis, photolysis, and thermogravimetrical studies on some new copper(II) complexes of the above-mentioned Schiff bases; their structures are given in Fig. 1.…”

Synthesis, characterization, electronic structure, and non‐linear optical properties (NLO) of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes with 5‐phenylazo‐8‐hydroxyquinoline using DFT approach

“…Proton‐ligand dissociation constants of 5‐phenylazo‐8‐hydroxylquinoline derivatives and metal–ligand stability constants of their complexes with metal ions (La 3+ , Ce 3+ , Pr 3+ , Zr 4+ , Hf 4+ and Th 4+ ) have been obtained potentiometrically . Mixed ligand complexes of 5‐(arylazo)‐8‐hydroxyquinoline derivatives have been synthesized and described by different analytical techniques . Complexation of Ca 2+ by 5‐phenylazo‐8‐hydroxyquinoline bound to controlled pore glass is characterized in terms of a modification of the ionizable surface‐group model .…”