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Bidentate Schiff bases ( I 1 –I 9) are synthesized by condensation between substituted anilines, benzothiazoles, and 2-hydroxy aromatic aldehydes. The Zn(II) derivatives ( 1–9 ) are prepared by reacting the respective ligand and zinc acetate dihydrate in a 2:1 mole ratio in dry methanol using triethylamine as a base. They are characterized by FTIR, NMR, and single-crystal XRD techniques. The XRD data confirmed distorted tetrahedral molecular geometry for  6 ; the intermolecular interactions are investigated comprehensively by 3-D Hirschfeld surface analysis and 2-D fingerprint plots. The DFT studies for the compounds are conducted for geometrical and energy optimization by applying 3-21 G* and 6-311++G (d, p)/B3LYP basis sets. Molecular docking data show that ligands possess GOLD scores in the range 51.5–46.7, whereas  2  and  3  have shown good fitness score of 57.7 and 53.3, respectively, with a maximum score of 60.2 for  7 . The antibacterial data for  7  shows zone of inhibition as 17.3 mm against  Staphylococcus aureus  and 16.3 mm against  Staphylococcus epidermidis , whereas  2  exhibits maximum value of 15.6 mm against gram negative bacteria  Escherichia coli . The maximum and comparable alpha amylase inhibition potential of 12.6 and 12.3% are found for  8  and  3 , respectively.

Zinc(II) derivatives of N, O containing Schiff bases: synthesis, characterization, computational and biological studies