Diethyl [4-(2,2′:6′,2′′-terpyridine-4′-yl)phenyl]phosphonate

Abstract

The title compound, C25H24N3O3P, was obtained by catalytic phosphonation of 4′-(4-bromphenyl)-2,2′:6′,2′′-terpyridine. The terpyridine moiety is nearly planar, the dihedral angles between the central and the outer rings being 4.06 (9) and 5.39 (9)°. The N atoms in the two pyridine rings are oriented nearly antiperiplanar to that of the central ring. The benzene ring is rotated out of the plane of the central ring of the terpyridine unit by 34.65 (6)°.