title: Synthesis, Characterization, Spectral Studies, Antibacterial Evaluation, Thermodynamics and DFT Calculations of Dimethyltin(IV) Dichloride Schiff Base.
abstract: A number of new 1:1 complexes of SnMe(2)Cl(2) with unsymmetrical tetradentate Schiff base ligand with NNOS coordination sphere have been synthesized and fully characterized by a variety of physico-chemical techniques viz. elemental analysis, molar conductivity, (1)H and (119)Sn NMR, IR and mass spectroscopy. IR spectral data show that the fifth coordination position of tin atom is occupied by an oxygen atom of Schiff base ligands. In the light of titled techniques, trigonal bipyramidal geometry around the tin atom is proposed for the synthesized complexes. The in vitro antibacterial activities of the complexes against Staphylococcus aureus and Escherichia Coli have been studied. It was found that they possess significant antibacterial activity. Also, DFT/B3LYP method was used to analyze the electronic structures and study of the geometries. The thermodynamic formation constants of the complexes were determined spectrophotometrically at 25ºC in DMF solvent.
authors.forename: Sheida
authors.initials: S
authors.lastname: Esmaielzadeh
authors.forename: Khadijeh
authors.initials: K
authors.lastname: Shekoohi
authors.forename: Mohammad
authors.initials: M
authors.lastname: Sharif-Mohammadi
authors.forename: Ghazal
authors.initials: G
authors.lastname: Mashhadiagha
authors.forename: Khosro
authors.initials: K
authors.lastname: Mohammadi
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009947:Organotin Compounds / Q000737:chemistry*; D012545:Schiff Bases / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013816:Thermodynamics
chemical_list: D000900:Anti-Bacterial Agents; D056831:Coordination Complexes; D009947:Organotin Compounds; D012545:Schiff Bases; C039760:dimethyltin