Pravinkumar Patil, A. K. Pathan, S. Zangade
Apr 1, 2021
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Abstract
Abstract Present work deals with the synthesis of the 1-(4-bromo-1-hydroxynaphthalen-2-yl)ethan-1-one 3 from 2-acetyl-1-naphthol 2 using Br2/AcOH (20%) as brominating agent. The structure compound 3 was confirmed on the basis of spectral study such as FTIR, 1H NMR, 13C NMR and GCMS. The crystal structure of 4-bromo-2-acetyl-1-naphthol was also confirmed by the X-ray single-crystal diffractometry analysis and revealed the unit cell parameters, packing style. The single crystal has been grown by slow evaporation method at ambient temperature. The crystal size for compound 3 was found to be 0.150 × 0.120 × 0.100 mm3. The crystal has grown with monoclinic crystal system with Z value of four and space group symmetry was P21/c. The unit cell parameters and angles were a; 7.3584 A, b; 17.772 A, c; 8.357 A, α; 90°, β; 108.711°, √; 90°. The crystal structure of 3 is stabilized via one strong classical hydrogen bond interaction and two weak intermolecular hydrogen bonding. The observed average bond lengths of C C, C H, C O, C Br and O H bonds were 1.410, 0.941, 1.289, 1.899 and 0.80 A respectively.