NDLI: Synthesis, characterization, structural analysis of metal(II) complexes of N'-[(E)-3-Bromo-5-Chloro-2-hydroxybenzidene]-4-hydroxybenzohydrazide-Multisubstituted Schiff base as a F(-) and Cu(2+) ions selective chemosensor.

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Synthesis of quinoline derivatives containing pyrazole group and investigation of their crystal structure and spectroscopic properties in relation to acidity and alkalinity of mediums.

The amide protonation of (-)-N-benzoylcytisine in its perchlorate salts.

Bio-functionalized silver nanoparticles for selective colorimetric sensing of toxic metal ions and antimicrobial studies.

Spectroscopic and structural investigations of iron(III) isothiocyanates. A comparative theoretical and experimental study.

UV-Vis spectroscopic study and DFT calculation on the solvent effect of trimethoprim in neat solvents and aqueous mixtures.

Quantum chemical computations, vibrational spectroscopic studies, NLO and NBO/NLMO analysis of o-chlorobenzohydrazide.

DFT study of conformational and vibrational characteristics of 2-(2-hydroxyphenyl)benzothiazole molecule.

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Analytical studies on the charge transfer complexes of loperamide hydrochloride and trimebutine drugs. Spectroscopic and thermal characterization of CT complexes.

Synthesis, characterization and antibacterial activity of a Schiff base derived from cephalexin and sulphathiazole and its transition metal complexes.

Synthesis, characterization and reactivity of trinuclear Cu(II) complexes derived from disalicylaldehyde malonoyldihydrazone.

Investigations on the vibrational modes and non-linear optical properties of 4-Fluoro Chalcone crystal.

Biosynthesis, characterization and antibacterial studies of silver nanoparticles using pods extract of Acacia auriculiformis.

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Acidity constant and solvatochromic behavior of some pyrazolo[1,5-a]pyrimidin-2-amine derivatives.

Quantum chemical calculations on the geometrical, conformational, spectroscopic and nonlinear optical parameters of 5-(2-Chloroethyl)-2,4-dichloro-6-methylpyrimidine.

Crystal structures, spectra properties and DFT calculations studies on 4-phenyl-1-(3-phenylallylidene)thiosemicarbazide and its Ni(II) complex.

Spectroscopic studies of alpha tocopherol interaction with a model liposome and its influence on oxidation dynamics.

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Analysis of structure origin and luminescence properties of Yb(3+)-Er(3+) co-doped fluorophosphate glass.

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Quantum-mechanical DFT calculation supported Raman spectroscopic study of some amino acids in bovine insulin.

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Synthesis, characterization, structural analysis of metal(II) complexes of N'-[(E)-3-Bromo-5-Chloro-2-hydroxybenzidene]-4-hydroxybenzohydrazide-Multisubstituted Schiff base as a F(-) and Cu(2+) ions selective chemosensor.

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Synthesis, characterization, structural analysis of metal(II) complexes of N'-[(E)-3-Bromo-5-Chloro-2-hydroxybenzidene]-4-hydroxybenzohydrazide-Multisubstituted Schiff base as a F(-) and Cu(2+) ions selective chemosensor.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Marappan, M. Prabhu, M. Sundar, A. Indra Gandhi, N. Rajagopal, G.
Description	Country affiliation: India Author Affiliation: Sundar A ( Department of Chemistry, Madras Medical College, Chennai 600 003, India.); Prabhu M ( Department of Chemistry, Government Arts College (Men), Nandanam, Chennai 600 036, India.); Indra Gandhi N ( PG & Research Department of Chemistry, Presidency College (Autonomous), Chennai 600 005, India.); Marappan M ( Department of Chemistry, Government Arts College (Men), Nandanam, Chennai 600 036, India. Electronic address: mmarappan@yahoo.com.); Rajagopal G ( Department of Chemistry, Madras Medical College, Chennai 600 003, India)
Abstract	New colorimetric chemosensor, N'-[(E)-3-Bromo-5-Chloro-2-hydroxybenzidene]-4-hydroxybenzohydrazide, containing OH and NH groups as binding sites have been synthesized and characterized by spectral UV, IR, NMR and ESR. The molecular structure of ligand is determined by X-ray crystallography and it has the monoclinic space group P21/c with cell parameters a=15.1058(6), b=14.3433(6), c=17.5800(8)Å and Z=8. The electronic spectral measurements show that Co(2+), Ni(2+) and Zn(2+) complexes have tetrahedral geometry, while Cu(2+) complex has square planar geometry. Magnetic measurements show that Cu(2+), Co(2+) and Ni(2+) complexes have paramagnetic behavior and Zn(2+) complex has diamagnetic behavior. Anion binding studies carried out using (1)H NMR and UV-visible spectrophotometric titrations revealed that these receptors exhibit selective recognition towards F(-) over other halide anions. The selectivity for F(-) among the halides is attributed mainly to the hydrogen-bond interaction of the receptor with F(-). Receptor (5 × 10(-5)M) shows color change from colorless to yellow in the presence of tetrabutylammonium fluoride (TBAF, 1.5 × 10(-3)M). Moreover, F(-)-induced color changes remain the same even in the presence of large excess of Cl(-), Br(-) and I(-). The binding constant is found to be higher towards F(-) ion and this may be due to presence of OH group, which offers extra binding site. Chromogenic receptor undergoes distinct color changes from colorless to green on gradual addition of Cu(2+) can be used as colorimetric probes for spectrophotometric and visual analysis of Cu(2+) in the presence of other transition metal ions such as Co(2+), Ni(2+) and Zn(2+).
ISSN	13861425
Volume Number	129
e-ISSN	18733557
Journal	Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Language	English
Publisher	Elsevier
Publisher Date	2014-08-14
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Coordination Complexes Chemistry Copper Analysis Fluorine Hydroxybenzoates Schiff Bases Crystallography, X-ray Electron Spin Resonance Spectroscopy Ions Magnetic Resonance Spectroscopy Models, Molecular Spectrophotometry, Infrared Spectrophotometry, Ultraviolet Journal Article Research Support, Non-u.s. Gov't Discipline Spectroscopy
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Atomic and Molecular Physics, and Optics Analytical Chemistry Instrumentation

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