Nickel(II)-azido/thiocyanato complexes of 1-alkyl-2-(naphthylazo)imidazole

[Ni(NaiR)2(X)2] (X = N3 (3, 4) and NCS (5, 6) complexes are synthesized from the reaction of Ni(ClO4)2 · 6H2O with 1-alkyl-2-(naphthyl-α/β-azo)imidazole (α/β-NaiR) and sodium azide (NaN3) or ammonium thiocyanate (NH4NCS) (1:2:2 molar ratio) in methanol solution. The complexes are characterized by elemental, spectroscopic and magnetic study. The distorted octahedral structure has been confirmed by single crystal X-ray diffraction study of [Ni(β-NaiEt)2(NCS)2] (6b). Cyclic voltammogram exhibits quasireversible oxidation response at 0.3–0.4 V which is corresponding to Ni(III)/Ni(II) couple along with ligand reductions at negative potential to SCE reference electrode.

[Ni(NaiR)2(X)2] (X = N3 and NCS) are synthesized and characterized. One of them has been structurally characterized by single crystal X-ray diffraction study. Cyclic voltammogram exhibits quasireversible oxidation response at 0.3–0.4 V which is corresponding to Ni(III)/Ni(II) couple along with ligand reductions at negative potential to SCE reference electrode.Figure optionsDownload as PowerPoint slide