Ethyl 2-(3,5-difluorophenyl)quinoline-4-carboxylate: a second triclinic polymorph

Autor: S. Shashidhar Bharadwaj, Karthik Kumara, Boja Poojary, H. S. Yathirajan, K. Byrappa, N. K. Lokanath, S. Madan Kumar
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: IUCrData, Vol 1, Iss 5, p x160739 (2016)
Druh dokumentu: article
ISSN: 2414-3146
24143146
DOI: 10.1107/S2414314616007392
Popis: The title compound, C18H13F2NO2, is a polymorph of the structure reported by Sunitha et al. [Acta Cryst. (2015), E71, o341–o342]. Both compounds crystallize in the triclinic space group P\overline{1}. The principal difference between the two polymorphs lies in the orientation of the carboxylate substituents with respect to the planes of the quinoline ring systems. In the crystal, the packing features C—H...O hydrogen bonds together with short C—F...π and π–π interactions [inter-centroid distances of 3.8199 (11), 3.6825 (12) and 3.8722 (13) Å].
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