STRUCTURE OF NAPHAZOLINE NITRATE

2-(1-Naphthylmethyl)-2-imidazoline nitrate, C14H15N3O3, M(r) = 273.29, orthorhombic, Pbca, a = 12.033(4), b = 14.387(4), c = 15.913(4) angst rom, V = 2754.9(4) angstrom3, Z = 8, D(m) = 1.32(3) (flotation), D(x) = 1.318 Mgm-3, (Cu Kalpha) = 1.5418 angstrom, mu = 7.45 cm-1, F(000) = 1152, T = 296 K, final R = 0.078, wR = 0.058 for 1397 reflections wit h I > 2sigma(I). The naphthalene ring exhibits orientational disorder. The N - H ... 0 hydrogen bonds involving both the nitrogen atoms of t he imidazoline ring serve to form infinite chains of alternating napha zoline cations and nitrate anions.