Synthesis and structure of (RS)-6-hy-droxy-6-(2-oxoprop-yl)-1,10-phenanthrolin-5(6H)-one.

The title compound, C15H12N2O3, was synthesized by reacting phendione with acetone in ethanol under microwave irradiation. An intra-molecular C=O⋯π inter-action supports the mol-ecular conformation. In the crystal, inversion dimers linked by pairwise, bifurcated O-H⋯(N,N) hydrogen bonds are seen and the dimers are further linked by weak C-H⋯N and C-H⋯O hydrogen bonds and aromatic π-π stacking inter-actions. Hirshfeld surface analysis shows the following contact percentages: H⋯H 36.8%; H⋯O/O⋯H 26.1%; H⋯C/C⋯H 14.9%; H⋯N/N⋯H 14.5%; C⋯C 5.3%, with all other contact types making negligible contributions.