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/Author (Ummathur, Muhammed and Pallikkavil, Radhika and Krishnankutty, Krishnannair)
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/Title ({Schiff bases of 1,5-diarylpent-4-ene-1,3-diones and their metal complexes: Synthesis, characterization and fluorescent studies})
/bibtex#2FURL (https://www.shd-pub.org.rs/index.php/JSCS/article/view/9525)
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/Keywords (imine-enamine form,o-aminophenol,spectral data,tetradentate coordination)
/Subject (Four Schiff bases \(H2L1 to H2L4\) have been synthesized by the con-densation between o-aminophenol and unsaturated diketones \(1,5-diarylpent-4--ene-1,3-diones\). Analytical, IR, 1H NMR and mass spectsral data revealed their existence in the imine-enamine form. Dibasic tetradentate coordination of the Schiff bases in their ML complexes [M = Cu\(II\), Ni\(II\), Co\(II\), Zn\(II\), Cd\(II\), and Hg\(II\)] has been established on the basis of physical, analytical and spectral data. The fluorescent studies of H2L4 show that fluorescence emission maxima shift with increase in polarity and hydrogen bonding ability of the solvent. Paramagnetic Cu\(II\), Ni\(II\) and Co\(II\) ions decrease the fluorescence intensity with increase in concentration of the metal ion while diamagnetic Zn\(II\), Cd\(II\) and Hg\(II\) ions have very little influence on the intensity of fluorescence of the Schiff base H2L4.nema)
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Four Schiff bases (H2L1 to H2L4) have been synthesized by the con-densation between o-aminophenol and unsaturated diketones (1,5-diarylpent-4--ene-1,3-diones). Analytical, IR, 1H NMR and mass spectsral data revealed their existence in the imine-enamine form. Dibasic tetradentate coordination of the Schiff bases in their ML complexes [M = Cu(II), Ni(II), Co(II), Zn(II), Cd(II), and Hg(II)] has been established on the basis of physical, analytical and spectral data. The fluorescent studies of H2L4 show that fluorescence emission maxima shift with increase in polarity and hydrogen bonding ability of the solvent. Paramagnetic Cu(II), Ni(II) and Co(II) ions decrease the fluorescence intensity with increase in concentration of the metal ion while diamagnetic Zn(II), Cd(II) and Hg(II) ions have very little influence on the intensity of fluorescence of the Schiff base H2L4.nema
Muhammed Ummathur
Radhika Pallikkavil
Krishnannair Krishnankutty
bibtex/citationkey/Ummathur2021
bibtex/file/:C\:/Users/Dekanski/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Ummathur, Pallikkavil, Krishnankutty - 2021 - Schiff bases of 1,5-diarylpent-4-ene-1,3-diones and their metal complexes Synthesis, chara.pdf:pdf;:03_9525_5402.pdf:PDF
bibtex/issn/0352-5139
bibtex/journal/Journal of the Serbian Chemical Society
bibtex/month/jan
bibtex/number/01
bibtex/pages/39--49
bibtex/url/https://www.shd-pub.org.rs/index.php/JSCS/article/view/9525
bibtex/volume/86
10.2298/jsc200520062u
imine-enamine form
o-aminophenol
spectral data
tetradentate coordination
Serbian Chemical Society
{Schiff bases of 1,5-diarylpent-4-ene-1,3-diones and their metal complexes: Synthesis, characterization and fluorescent studies}
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