Self-assembly of copper(II) tetraaza macrocyclic complex with cyclohexane-1,3-dicarboxylic acid-5-monocarboxylate linked by hydrogen bond

A novel complex with the composition {[Cu(L)]⋅(Cl)⋅(H,H-cdc)⋅(H2O)}n (1) (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane; H,H-cdc = cyclohexane-1,3-dicarboxylic acid-5-monocarboxylate) has been synthesized and structurally characterized by X-ray diffraction method. It crystallizes in the monoclinic system P21/n with a = 9.507(9), b = 12.624(3), c = 26.922(4) Å, β = 96.79(1)°, V = 3208(3) Å3, Z = 4. The complex contains a 1D hydrogen-bonded polymeric chain with copper(II) macrocycle and bridging H,H-cdc ligand. The copper(II) coordination geometry is best described as a square-plane with four Cu–N bonds. The weak interaction between copper(II) ion and the chloride ion is also found.