Crystal structure of bis-(2,2':6',2''-terpyridine-κ(3) N,N',N'')nickel(II) dicyanidoaurate(I).

Abstract

The title compound, [Ni(C15H11N3)2][Au(CN)2]2, is an ionic compound composed of bis-(2,2':6',2''-terpyridine)-nickel(II) dications and dicyanidoaurate(I) anions in a 1:2 ratio. The two tridentate terpyridine ligands define the coordination of the Ni(2+) cation, resulting in a nearly octa-hedral coordination sphere, although there is not any imposed crystallographic symmetry about the Ni(2+) site. The two nearly linear dicyanidoaurate(I) anions [C-Au-C = 179.0 (2) and 178.2 (2)°] contain a short aurophilic inter-action of 3.1017 (3) Å. The structure does not demonstrate any π-π stacking. Non-classical C-H⋯N inter-actions between the cations and anions build up a three-dimensional network.