STRUCTURE OF 4'-DIMETHYLAMINO-4-METHYL-4-AZASTILBENIUM P-TOLUENESULFONATE HYDRATE

4'-Dimethylamino-N-methyl-4-stilbazolium tosylate hydrate, C16H19N2+.C7H7O3S-.H2O, M(r) = 428.5, triclinic, P1BAR, a = 8.006 (2), b = 9.548 (2), c = 14.647 (12) angstrom, alpha = 80.34 (2), beta = 80.30 (2), gamma = 77.98 (2)degrees, V = 1069.2 angstrom3, Z = 2, D(x) = 1.330 g cm-3, lambda(Mo Kalpha) = 0.71069 angstrom, mu = 1.75 cm-1, F(000) = 456, T = 213 K, R = 0.0649 for 3754 unique reflections with I > 2sigma(I). The 4-methyl-4'-dimethylamino-4-azastilbenium molecules pack head to tail within a sheet and are aligned in the opposite direction in the neighboring sheets. The phenyl rings in the p-toluenesulfonate groups lie at an angle of 72-degrees relative to the aromatic rings in the azastilbenium groups. The axes for both molecules lie along the a axis. The rings for the azastilbenium group lie in the ab plane and the phenyl ring of the p-tolunesulfonate group lies in the ac plane.