Synthesis, characterization and crystal structure of a new tetraaza macrocycle with m-xylyl spacer

The new [2] macrocyclic ligand with N4 donor set, from the [2] condensation of benzene-1,3-dicarboxaldehyde and 2,2- dimethylpropylenediamine was synthesized by high dilution method and confirmed by IR, 1H NMR, 13C NMR, elemental analysis and crystal structure determination. Resonance data investigation of the compound indicates highly symmetrical structure for the macrocyclic ligand consists of two N2 donor sets. The compound is crystallized in the monoclinic system with space group C2/c. The metric parameters of the molecule show that a twofold axis bisects the macrocycle, passing through the cavity of the macrocycle.