Three Dicyanidometallate(I)-based Complexes Incorporating Hydrogen-bonding, π-π Packing and d¹⁰-d¹⁰Interactions with Auxiliary 2,2′-Bipyridyl-like Ligands

To investigate the influence of the non-covalent interactions such as hydrogen bonding pi-pi packing and d(10)-d(10) interactions in the supramolecular motifs, three cyanide, bridged heterobimetallic discrete complexes {Mn(bipy)(2)(H2O)[Ag(CN)(2)]}[Ag(CN)(2)] (1) {Mn(phen)(2)(H2O) [Au(CN)(2)]}(2)[Au(CN)(2)](2) 4H(2)O (2), and {Cd(bipy)(2)(H2O)[Au(CN)(2)]} [Au(CN)(2)] (3) (biPy = 2 2 bipyridine, and phen = 1,10 phenanthroline) which are based on dicyanidometallate(1) groups with 1 2 stoichiometry of metal ions and 2,2' bipyridyl like co ligands were synthesized and structurally characterized In compound 1 hydrogen bonding and pi-pi interactions governed the supramolecular contacts In compound 2, the incorporation of aurophilic, hydrogen bonding and pi-pi interactions result in a 3D supramolecular network In compound 3 hydrogen bonding and pi-pi stacking interactions result in a 2D supramolecular layer In the three complexes hydrogen-bonding pi-pi ricking and/or d(10)-d(10) interactions can play important roles in increasing the dimensionality of supramolecular assemblies