Synthesis, Characterization, and Electrochemical Studies of Copper(II) Complexes with Tripod Ligand Tris(2‐benzimidazylmethyl)amine and α,β‐Unsaturated Carboxylate

Four pentacoordinate copper complexes of tripod ligand tris(2‐benzimidazylmethyl)amine (ntb), and four different α,β‐unsaturated carboxylate (L^1–4), with compositions [Cu₂(ntb)₂ (L^1–3)] (NO₃)₃ · nH₂O and [Cu(ntb)(L⁴)](NO₃) · nH₂O (L¹=acrylate; L²=α‐methacrylate; L³=2‐hydroxycinnamate; L⁴=trans‐cinnamate; n=1, 1.5, 2), were synthesized and characterized by elemental and thermal analyses, electrical conductivities, IR, and UV‐Visible measurements. Cyclic voltammograms of the copper complexes indicate a quasireversible Cu⁺²/Cu⁺ couple. Possible structures of these complexes have been proposed.

Keywords:

• copper(II) complexes
• tris(2‐benzimidazylmethyl)amine
• cyclic voltammogram
• synthesis