Preparation, Spectroscopy and X-Ray Structure Analysis of N, Nʹ-Bis(3-nitrophenylmethylene)- cyclohexane-1,2-diamine

Abstract

The compound N,cyclohexane-1,2-diamine (α-diimine Shiff base) was synthesized and characterized by MS, IR, NMR 1 H and X-ray single crystal analysis. While the cyclohexane-1,2-diamine used for the synthesis of this composite is a racemic cis and trans mixture, we observed by x-ray diffraction for the product N,N'-bis(3-nitrophenylmethylene) cyclohexane-1,2-diamine only the (1R,2R)trans enantiopure. The crystalline network cohesion of this compound is assured by a combination of C-H ... O and C-H ... N hydrogen bonds. It crystallizes in the monoclinic non-standard I2/a space group.