1-(4-Meth-oxy-phen-yl)-2-[4-(tri-fluoro-meth-yl)phen-yl]-1H-phenanthro[9,10-d]imidazole

In the title compound, C29H19F3N2O, a phenanthroline-fused imidazole tetra-cyclic system, the fused benzene rings deviate slightly from the central ring and make dihedral angles with this ring of 3.47 (8) and 3.05 (8)°. The tri-fluoro-methyl-phenyl ring is roughly coplanar with the phenanthroline-fused imidazole tetra-cyclic system [dihedral angle = 11.02 (6)°], while the meth-oxy-phenyl ring is almost perpendicular [dihedral angle = 87.65 (6)°]. There are intra-molecular C-H ⋯π inter-actions involving the meth-oxy-phenyl ring and the central phenanthroline ring, as well as an inter-molecular C-H⋯π inter-action involving the phenanthroline ring. In addition, there is an inter-molecular π-π inter-action involving the central phenanthroline ring and the tri-fluoro-methyl-phenyl ring [centroid-centroid distance = 3.685 (2) Å], as well as C-H⋯N inter-actions linking the mol-ecules into dimers.