Two novel 1D complexes containing the dicyanoaurate ions incorporating gold-gold and hydrogen bonding interactions

Two novel ID complexes, [Ni(hto){Au(CN)(2)](2)][Ni(hto)](ClO4)(2)center dot 4H(2)O (hto = 1,3,6,9,11,14-hexaazatricyclo[12.2.1.1(6,9)]octadecane, in Scheme 1.) (1) and [Co(dien)(2)][{Au(CN)(2)}(3)]center dot 2H(2)O (dien = diethylenetriamine) (2) have been synthesized and characterized. The crystal structure of I confirmed the presence of nickel (II) chains via Au-Au interactions. The coordination geometry around the six-coordinate nickel (II) ion is slightly distorted octahedral with four nitrogen atoms of the macrocycle and two nitrogen atoms of the cyanides. The presence of Au-Au interactions have effectively increased the zero dimensional coordination polymer to a one dimensional system. In the complex 2, there are one cation, three anions, and two water molecules in the asymmetric unit. These components are interconnected through a combination of aurophilic attractions and hydrogen bonds and formed ID chains. (c) 2005 Elsevier B.V. All rights reserved.Chemistry, Inorganic & NuclearSCI(E)4ARTICLE123287-329235