Key indicators: single-crystal X-ray study; T = 100 K; mean (C-C) = 0.006 Å; R factor = 0.059; wR factor = 0.136; data-to-parameter ratio = 12.6.The asymmetric unit of the title compound, C 16 H 13 N 3 O 2 , contains two independent molecules in which the pyridine and benzene rings form dihedral angles of 81.7 (2) and 79.8 (2) , indicating the twist in the molecules. In the crystal, weak C-HÁ Á ÁN interactions link molecules into chains along [100].
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ExperimentalCrystal data Table 1 Hydrogen-bond geometry (Å , ). RMF is grateful to the Spanish Research Council (CSIC) for the use of a free-of-charge licence to the Cambridge Structural Database (Allen, 2002). RMF also thanks the Universidad del Valle, Colombia, and AEL thanks Universidad Javeriana, Colombia, for partial financial support. Thanks are due to the National Crystallography Service at the University of Southampton for the data collection.