Synthesis, crystal structure and helical ladder-like assembly of a novel terephthalato-bridged binuclear Cu(II) complex: First report on terephthalate bridging under tetraaza macrocyclic environment

Single crystal X-ray study on a novel terephthalato-(μ2-tp)-bridged binuclear Cu(II) tetraaza macrocyclic complex, [Cu2(dinemac)2(tp)(ClO4)2], reveals that the syn-anti disposition of two NO2 groups in the individual dinemac ligand and consequent intermolecular H-bonding between the two successive binuclear entities on both sides results a supramolecular R22 (34) synthon in (0 1 1) plane which on further propagation in the same sequence renders two single strand helices connected via tp moiety results in a 3-D supramolecular helical ladder-like assembly.