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Structure of 4-methyl-N-{2-[2-alkylamino-5-nitrophenyliminomethyl]phenyl}benzenesulfonamides |
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| Authors: | S. A. Nikolaevskii M. A. Kiskin Yu. V. Koshchienko A. S. Burlov A. G. Starikov I. L. Eremenko |
| Affiliation: | 17769. Institute of Physical and Organic Chemistry, Southern Federal University, pr. Stachki 194/2, Rostov, Russia 27769. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia 37769. Southern Scientific Center, Russian Academy of Sciences, ul. Chekhova 41, Rostov-on-Don, 344006, Russia |
| Abstract: | The structures of Schiff bases prepared by the condensation of 2-tosylaminobenzaldehyde with 2-alkylamino-5-nitroanilines were studied by X-ray diffraction. The intramolecular N-H…N hydrogen bonds result in the closure of six-membered hydrogen-bonded rings, which are either planar or nonplanar depending on the substituent. According to the results of quantum-chemical calculations, the distortion of the hydrogen-bonded ring is associated with the character of molecular packing in the crystal. |
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