4-Diphenylphosphanyl-8-methyl-1,5-naphthyridine

Abstract

In the title compound, C21H17N2P, the dihedral angles between the 1,5-naphthyridine ring system (r.m.s. deviation = 0.005 Å) and the phenyl rings are 89.18 (8) and 77.39 (8)°. The phenyl rings are almost perpendicular, making a dihedral angle of 88.12 (8)°. The only possible intermolecular interaction is a very weak aromatic π–π stacking interaction [centroid–centroid separation = 3.898 (2) Å].