In the title compound, [Ru(NO2)(C19H13N5)(C18H15P)(2)]ClO4.C2H6O, the
two phosphine ligands are in trans positions. The Ru atom and imidazol
ylpyridine moiety are almost coplanar, with the fused ring of the imid
azolyl groups somewhat bent from the plane due to the steric hindrance
of the phosphine phenyl groups. The nitro ligand is coordinated so th
at the NO2 group is rotated 40.5(1)degrees from the imidazolylpyridine
plane.