Supramolecular architecture in nickel(II) polyamine tetracyanoquinodimethanido systems

A study on the synthesis, crystal structure and chemical properties of three different metallic fragments with (NiLN)(super 2+) and (TCNQ)(sub 2)(super 2-) is presented. The metallic fragments are (Ni(dien)2)(super 2+), (Ni(trien))(super 2+) and (Ni(cyclam))(super 2+). Results show that the interaction between TCNQ and the metallic fragments depends on the metal environment in the transition metal center. Hydrogen bonds between the TCNQ nitriles and the amine groups of the metal fragments stabilizes the supramolecular architecture.