ABSTRACT
Friedländer-type condensation of 5-amino-4-cyano-1-(phenyl/p-substitutedphenyl)imidazole with cycloalkanone was done by refluxing the mixture with a suspension of anhydrous aluminum chloride in dry 1,2-dichloroethane to produce 7-amino-3-aryl(5,6)cycloalkanoimidazolo[4,5-b]pyridine. Single X-ray crystallographic diffraction studies had shown that compounds had different types of heterodimeric, homodimeric π–π stacking, T-type stacking, and intermolecular hydrogen bonds which lead to nanostructure formation detected by scanning electron microscope. DFT calculation had also been performed to quantify heterodimeric π–π and T-stacking interactions.
GRAPHICAL ABSTRACT
Acknowledgments
The author (A. D.) thanks the University of Calcutta for providing laboratory and spectroscopic facilities. I thank Prof. (retd.) Sibdas Ray, Dr. Kaliprasanna Dhara of Chemistry Dept., University of Calcutta for their support. Single X-ray Crystallographic studies had been performed with Single Crystal Diffractometer Facilities offered by DST-FIST programme, at the Chemistry Dept., C.U. The author thanks Centre for Research in Nanoscience & Nanotechnology of University of Calcutta for scanning electron microscopic study. The author thanks the Council of Scientific and Industrial Research, New Delhi, India for financial support.