Quinoline-2-carbonitrile–fumaric acid (1/0.5)

• Main Authors: Wan-Sin Loh, Ching Kheng Quah, Madhukar Hemamalini, Hoong-Kun Fun
• Format: Article
• Language: English
• Published: International Union of Crystallography 2010-09-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536810032745
• ISSN: 1600-5368

The asymmetric unit of the title compound, C10H6N2·0.5C4H4O4, consists of one quinoline-2-carbonitrile molecule and a half-molecule of fumaric acid, which lies on an inversion center. The quinoline-2-carbonitrile molecule is almost planar, with an r.m.s. deviation of 0.008 (1) Å. The acid and base are linked together via pairs of intermolecular C—H...O and O—H...N hydrogen bonds, forming R22(8) ring motifs. In the crystal, the carbonitrile molecules are further linked by intermolecular C—H...N hydrogen bonds, generating R22(10) ring motifs, resulting in zigzag chains running along the c axis.