Affiliation:
1. Department of Chemistry Kohat University of Science and Technology Kohat Pakistan
2. Department of Chemistry, Christopher Ingold Laboratory University College London London UK
3. Department of Chemistry Abdul Wali Khan University Mardan Pakistan
4. Department of Chemistry Quaid‐i‐Azam University Islamabad Pakistan
Abstract
Four new diorganotin(IV) complexes, including Me2SnL(1), Bu2SnL(2), Ph2SnL(3) and Oct2SnL(4), were synthesized by reacting R2SnCl2 (where R = Me, Bu, Ph, Oct) with N′‐(3,5‐dichloro‐2‐hydroxybenzylidene)‐2‐phenylacetohydrazide H2L. The synthesized ligand and complexes were structurally characterized by various techniques, including Fourier transform infrared (FT‐IR), 1H and 13C nuclear magnetic resonance (NMR) and mass spectrometry. The data suggested that tin–oxygen and tin–nitrogen bonds are formed during complex formation, confirming the coordination of ligand with dialkyltin(IV) moieties and the presence of penta‐coordinated structures. The single‐crystal X‐ray study was performed to confirm the molecular structure of complex 1, which revealed that the molecular structure is distorted towards square pyramidal geometry. The compound–DNA interaction was investigated via spectroscopic, electrochemical and molecular docking studies; the mode of interaction found in all cases was intercalative in nature. The complex 3 showed the highest binding ability with sodium salt of salmon sperm DNA (SS‐DNA) (1.93 × 105 M−1). The data obtained for DNA interaction studies from theoretical calculation via docking studies match well with those observed from spectroscopic and electrochemical analyses. Electrochemical and thermodynamic parameters, including diffusion coefficient, ∆H, ∆G and ∆S, were also calculated. The DPPH antioxidant results showed that complex 2 is an active antioxidant.
Funder
Higher Education Commision, Pakistan
Subject
Inorganic Chemistry,General Chemistry
Cited by
3 articles.
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