Synthesis and Crystals Structures of Cu(II) and Ni(II) Tetrazamacrocyclic Complexes

Abstract

A tetrazamacrocycle ligand 5,7,12,14-tetraethyl-7,14-   dimethyl-1,4,8,11-tetrazamacrocyclotetradecane·2ClO₄ (L₁)   and its copper(II) and nickel(II) complexes were synthesized   and characterized by IR spectra, elemental analysis. The crystal   structure of the L₁ was determined by single-crystal X-ray.   The possessing parameters: P2(1)/c, a = 14.6346(8) Å, b =   1.7652(7) Å, c = 16.0691(9) Å, α = 90º, β = 90º, γ = 90º, V =   2766.8(3) ų, Z = 4, Mr = 541.51, Dc = 1.300 g/cm³, μ =   0.282 mm^-1, F(000) = 1168, T = 293(2) K, R₁ = 0.0874, wR₂   = 0.2503 for 3136 reflections with I > 2σ(I).