title: Comparative studies, synthesis, spectroscopic and characterization of N-methylisatin-3-Girard's T and P hydrazone complexes.
abstract: Different types of complexes derived from the reactions of N-methylisatin Girard's T hydrazone, N,N,N-trimethyl-2-[(2z)-2-(1-methyl-2-oxo-1,2-dihydro-3H-indole-3-ylidene) hydrazino]-2-oxo-ethan ammonium chloride (MIGT) and N-methylisatin Girard's P hydrazone, 1-{2-(2z)-2-[(1-methyl-2-oxo-1,2-dihydro-3H-indole-3-ylidene) hydrazino]-2-oxoethyl}pyridinium chloride (MIGP) with Fe(3+), Al(3+), Sb(3+) and Sn(2+) salts were synthesized. The isolated complexes were characterized by elemental analyses, molar conductivities, spectral (IR, UV-Vis., (1)H NMR, mass), magnetic moments and thermal measurements. The values of conductance suggest that the complexes are conducting in polar solvents (EtOH, H2O and DMF). The IR spectra suggest that the ligands coordinate in a bidentate and/or tridentate manner via the carbonyl groups of both N-methylisatin and Girard's T and/or P and the (CN) group. The solvents inside and outside the coordination sphere were determined by weight loss and TGA methods. The octahedral geometry of the complexes is confirmed using spectral, magnetic and DFT method from DMOL(3) calculations. The ligands and their metal complexes were tested against different strains of bacteria and fungi.
authors.affiliation: Chemistry Department, Faculty of Applied Sciences, Umm Al-Qura University, Saudi Arabia.
authors.forename: Shaker J
authors.initials: SJ
authors.lastname: Azhari
authors.affiliation: Chemistry Department, Faculty of Science, Al-Azhar University, Egypt.
authors.forename: Sabah
authors.initials: S
authors.lastname: Salah
authors.affiliation: Chemistry Department, Faculty of Science, Al-Azhar University, Egypt.
authors.forename: Rabei S
authors.initials: RS
authors.lastname: Farag
authors.affiliation: Chemistry Department, Faculty of Science, Mansoura University, Egypt. Electronic address: amohsenmostafa@yahoo.com.
authors.forename: Mohsen M
authors.initials: MM
authors.lastname: Mostafa
mesh_terms: D001419:Bacteria; D001622:Betaine / Q000031:analogs & derivatives* / Q000737:chemistry; D005658:Fungi; D006835:Hydrazones / Q000138:chemical synthesis* / Q000737:chemistry* / Q000494:pharmacology*; D007211:Indoles / Q000737:chemistry*; D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D012663:Semicarbazides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D013055:Spectrophotometry, Infrared
chemical_list: D006835:Hydrazones; D007211:Indoles; D046911:Macromolecular Substances; D012663:Semicarbazides; C095912:N-methylisatin; D001622:Betaine; C012332:Girard's reagent T
keywords: Biological activity; Girard’s T and P hydrazone complexes; Methylisatin complexes; Spectroscopic studies and DFT calculations