Abstract
In the title hydroxamic acid derivate, C21H14N2O5Cl2, the nitro-substituted benzene ring forms dihedral angles of 66.0 (2) and 59.6 (2)°, with the p-chloro and o-chloro-substituted benzene rings, respectively. The dihedral angle between the two chloro-substituted benzene rings is 64.2 (2) Å. In the crystal, weak C—H⋯O hydrogen bonds link the molecules along [010]. The crystal studied was an inversion twin with refined components in the ratio 0.60 (7):0.40 (7).
Highlights
Crystal dataJing Ma,a* Yi Mab and Dian Hea a Institute of Medicinal Chemistry, School of Pharmacy, Lanzhou University, Lanzhou
66.0 (2) and 59.6 (2), with the p-chloro and o-chlorosubstituted benzene rings, respectively
The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry
Summary
Jing Ma,a* Yi Mab and Dian Hea a Institute of Medicinal Chemistry, School of Pharmacy, Lanzhou University, Lanzhou. 730000, Gansu Province, People’s Republic of China, and bGansu College of Traditional Chinese Medicine, Lanzhou 730000, Gansu Province, People’s Republic of China. R factor = 0.054; wR factor = 0.069; data-to-parameter ratio = 13.5. In the title hydroxamic acid derivate, C21H14N2O5Cl2, the nitro-substituted benzene ring forms dihedral angles of. 66.0 (2) and 59.6 (2) , with the p-chloro and o-chlorosubstituted benzene rings, respectively. The dihedral angle between the two chloro-substituted benzene rings is. Weak C—H O hydrogen bonds link the molecules along [010]. The crystal studied was an inversion twin with refined components in the ratio
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