title: Synthesis, spectral characterization and antimicrobial evaluation of Schiff base Cr (III), Mn (III) and Fe (III) macrocyclic complexes.
abstract: A Schiff base ligand was synthesized by reacting 1,4-dicarbonyl-phenyl-dihydrazide and chromene-2,3-dione (2:2) and a series of metal complexes with this new ligand were synthesized by reaction with Cr (III), Mn (III), and Fe (III) metal salt in methanolic medium. The Schiff base ligand and its metal complexes have been characterized with the help of elemental analysis, conductance measurements, magnetic measurements and their structure configuration has been determined by various spectroscopic (electronic, IR, (1)H NMR, (13)C NMR, GCMS) techniques. Electronic spectra of the complexes indicate that the geometry of the metal center was five coordinate square pyramidal. These metal complexes were also tested for their antimicrobial activities to assess their inhibiting potential.
authors.affiliation: Department of Chemistry, Vardhaman College, Bijnor 246701, Uttar Pradesh, India. gaj.chem@gmail.com
authors.forename: Gajendra
authors.initials: G
authors.lastname: Kumar
authors.forename: Shoma
authors.initials: S
authors.lastname: Devi
authors.forename: Rajeev
authors.initials: R
authors.lastname: Johari
authors.forename: Dharmendra
authors.initials: D
authors.lastname: Kumar
mesh_terms: D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D060326:Chemistry Techniques, Synthetic; D002857:Chromium / Q000737:chemistry; D005658:Fungi / Q000187:drug effects; D007501:Iron / Q000737:chemistry; D047028:Macrocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D008345:Manganese / Q000737:chemistry; D013058:Mass Spectrometry; D019216:Metals, Heavy / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D012545:Schiff Bases / Q000737:chemistry; D013057:Spectrum Analysis
chemical_list: D000890:Anti-Infective Agents; D047028:Macrocyclic Compounds; D019216:Metals, Heavy; D012545:Schiff Bases; D002857:Chromium; D008345:Manganese; D007501:Iron