Synthesis and Crystal Structure of a Tetraazamacrocyclic Copper(II) Complex

Abstract

The copper(II) complex [CuL]·(ClO₄)₂ (L= 5,5,7,12,12,14-   hexamethyl-1,4,8,11-tetrazamacrocyclotetradecane·2ClO₄)   has been synthesized and determined by X-ray diffraction.   The crystal is monoclinic, space group P2(1)/n with unit cell   parameters: a = 8.463(3)Å, b = 9.178(3)Å, c = 15.567(5)Å. α   = 90º, β = 98.120(4)º, γ = 90º, v = 1197.0(6)Å3, z = 2, Dc =   1.518 Mg/m³, Mr = 546.93, F(000) = 574 and μ = 1.183 mm^-1.   The final R and wR are 0.0379 and 0.1034, respectively for   2705 observed reflections with I>2σ(I). The center copper(II)   ion is four-coordinated in a slightly distorted square geometry.