Kobkeatthawin Thawanrat, Suwunwong Thitipone, Chantrapromma Suchada, Fun Hoong-Kun
Acta Crystallogr Sect E Struct Rep Online. 2008 Dec 10;65(Pt 1):o76-7. doi: 10.1107/S1600536808040671.
In the title compound, C(20)H(21)N(2) (+)·C(7)H(7)O(3)S(-)·H(2)O, the cation is essentially planar, as indicated by the dihedral angle of 2.79 (13)° between the quinolinium and the dimethylaminophenyl rings, and exists in the E configuration. The π-conjugated planes of the cation and the anion are inclined to each other at a dihedral angle of 66.95 (12)°. The cation is linked to the anion through C-H⋯O hydrogen bonds and the anion is further linked with the water mol-ecule by O-H⋯O hydrogen bonds, forming a three-mol-ecule unit. These units are arranged in a face-to-face manner into a ribbon-like structure along the b axis. The ribbons are stacked along the c axis. The crystal structure is further stabilized by C-H⋯π inter-actions involving the dimethyl-amino-phenyl and methyl-phenyl rings. A π-π inter-action with a centroid-centroid distance of 3.6074 (19) Å is also observed.
在标题化合物C(20)H(21)N(2) (+)·C(7)H(7)O(3)S(-)·H(2)O中，阳离子基本呈平面结构，喹啉鎓环与二甲基氨基苯环之间的二面角为2.79 (13)°，且以E构型存在。阳离子和阴离子的π共轭平面相互倾斜，二面角为66.95 (12)°。阳离子通过C-H⋯O氢键与阴离子相连，阴离子再通过O-H⋯O氢键与水分子相连，形成一个三分子单元。这些单元沿b轴以面对面的方式排列成带状结构。这些带沿c轴堆叠。晶体结构通过涉及二甲基氨基苯环和甲基苯环的C-H⋯π相互作用进一步稳定。还观察到一种质心-质心距离为3.6074 (19) Å的π-π相互作用。
