title: Synthesis and characterization of chromium(III) Schiff base complexes: antimicrobial activity and its electrocatalytic sensing ability of catechol.
abstract: A series of acyclic Schiff base chromium(III) complexes were synthesized with the aid of microwave irradiation method. The complexes were characterized on the basis of elemental analysis, spectral analysis such as UV-Visible, Fourier transform infrared (FT-IR), nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR) spectroscopies and electrospray ionization (ESI) mass spectrometry. Electrochemical analysis of the complexes indicates the presence of chromium ion in +3 oxidation state. Cr (III) ion is stabilized by the tetradentate Schiff base ligand through its nitrogen and phenolic oxygen. From the spectral studies it is understood that the synthesized chromium(III) complexes exhibits octahedral geometry. Antimicrobial activity of chromium complexes was investigated towards the Gram positive and Gram negative bacteria. In the present work, an attempt was made to fabricate a new kind of modified electrode based on chromium Schiff base complexes for the detection of catechol at nanomolar level.
authors.affiliation: Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: S Praveen
authors.initials: SP
authors.lastname: Kumar
authors.affiliation: Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: R
authors.initials: R
authors.lastname: Suresh
authors.affiliation: Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: K
authors.initials: K
authors.lastname: Giribabu
authors.affiliation: Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: R
authors.initials: R
authors.lastname: Manigandan
authors.affiliation: Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: S
authors.initials: S
authors.lastname: Munusamy
authors.affiliation: Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai 600 025, India.
authors.forename: S
authors.initials: S
authors.lastname: Muthamizh
authors.affiliation: Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai 600 025, India. Electronic address: vnnara@yahoo.co.in.
authors.forename: V
authors.initials: V
authors.lastname: Narayanan
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D002244:Carbon / Q000737:chemistry; D066241:Carbon-13 Magnetic Resonance Spectroscopy; D002384:Catalysis; D002396:Catechols / Q000032:analysis*; D002857:Chromium / Q000494:pharmacology*; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000494:pharmacology*; D055664:Electrochemical Techniques; D004566:Electrodes; D004578:Electron Spin Resonance Spectroscopy; D004583:Electrons; D005898:Glass / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008024:Ligands; D008826:Microbial Sensitivity Tests; D010084:Oxidation-Reduction; D066244:Proton Magnetic Resonance Spectroscopy; D012545:Schiff Bases / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D000890:Anti-Infective Agents; D002396:Catechols; D056831:Coordination Complexes; D008024:Ligands; D012545:Schiff Bases; D002857:Chromium; D002244:Carbon; C034221:catechol
keywords: Antimicrobial activity; Catechol; Chromium(III) Schiff base complex; Electrocatalytic sensor; Microwave synthesis