Structure of naphazoline nitrate

2-(l-Naphthylmethyl)-2-imidazoline nitrate, C₁₄H₁₅N₃O₃,M _r =273.29, orthorhombic,Pbca, a=12.033(4),b=14.387(4),c=15.913(4)Å,V=2754.9(4)Å₃,Z=8,D _m=1.32(3) (flotation),D _x=1.318 Mgm^–3, (CuK)=1.5418 Å,=7.45 cm^–1,F(000)=1152,T=296K, finalR=0.078,wR=0.058 for 1397 reflections withI> 2(I). The naphthalene ring exhibits orientational disorder. The N-HO hydrogen bonds involving both the nitrogen atoms of the imidazoline ring serve to form infinite chains of alternating naphazoline cations and nitrate anions.DCB Contribution No. 811.