STRUCTURE OF A CYCLOHEXANONE DERIVATIVE

The crystal structure of hydroxy-4,N,N'-trimethyl-2-(3-nitrophenyl)-6- oxo-1 ,3-cyclohexanedicarboxamide has been determined. The cyclohexane ring exhibits a chair conformation. The phenyl ring is planar and is approximately perpendicular to the cyclohexanone ring. The 3-nitro sub stituent on the phenyl ring is twisted about 10 degrees out of the rin g plane. The amide carbonyl groups are oriented in different direction s with respect to the cyclohexanone ring. These orientations of the ca rboxamide groups facilitate the formation of an intramolecular O-H...O hydrogen bond. The molecules are packed such that chains are formed a long the b axis. These chains are held together by N-H...O hydrogen bo nds.