Balancing ionic and H-bonding interactions for the formation of Au(i) hydrometallogels

Abstract

The ionic complex [Au(⁹N-adenine)(PMe₃)](CF₃CO₂) (1) displays a supramolecular structure built up through ionic, π-stacking, C–H⋯O, C–H⋯N and C–H⋯Au interactions. Ab initio calculations permit the characterization of the nature of these interactions. Complex 1 is luminescent in the solid state at 77 K. This complex forms a hydrometallogel consisting of straight molecular nanowires, which is responsive to thermal and mechanical stimuli. The gel has also been studied by rheological oscillatory experiments.