title: 4-{2-[4-(Dimethyl-amino)-phen-yl]ethen-yl}-1-methyl-pyridinium 2,4,6-trimethyl-benzene-sulfonate monohydrate.
abstract: In the crystal structure of the title organic salt, C(16)H(19)N(2) (+)·C(9)H(11)O(3)S(-)·H(2)O, the cations pack head-to-tail within a sheet and are aligned in opposite directions in neighboring sheets. The benzene ring of the anion makes an angle of 76.99 (6)° with the plane of the cationic chromophore. The cations are situated in the ab plane, whereas the benzene rings of the anions lie in the ac plane.
authors.affiliation: Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Yin
authors.initials: Y
authors.lastname: Li
authors.forename: Jian-Xiu
authors.initials: JX
authors.lastname: Zhang
authors.forename: Pei-Zhen
authors.initials: PZ
authors.lastname: Fu
authors.forename: Yi-Cheng
authors.initials: YC
authors.lastname: Wu