SYNTHESIS AND CHARACTERIZATION OF SOME METAL COMPLEXES OF A SCHIFF BASE DERIVED FROM NINHYDRIN AND &amp;alpha; ,L-ALANINE

Derebe, M.G.; Raju, V.S.; Retta, Negussie

doi:10.4314/bcse.v16i1.20948

Cited by 21 publications

(19 citation statements)

References 22 publications

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“…Values are in close agreement with the values calculated for expected molecular formulae assigned to these complexes, suggesting 1:1ratio for Ti(IV), Zr(IV), Cd(II) and Hg(II)complexes. The molar conductance of all these complexes in DMF reveals their electrolytic nature 14,15 expect Hg(II) complex. …”

Section: Results and Disussionmentioning

confidence: 99%

Rare Earth Complexes: The Search for Quasi-Monochromatic OLEDs

2012

Organic Light Emitting Diodes

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Biological active tridentate Schiff base ligand derived from 2-amino, 4-methyl phenol with isatin and their Ti(IV), Zr(IV), Cd(II) and Hg(II) metal complexes have been synthesized and characterized on the basis of IR, Elemental analysis, Electronic spectral data, Molar conductance and 1 H NMR. The Schiff base and its metal complexes have been tested for their antimicrobial activity using disc diffusion methods and the results were interpreted.

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Section: Results and Disussionmentioning

confidence: 99%

Rare Earth Complexes: The Search for Quasi-Monochromatic OLEDs

2012

Organic Light Emitting Diodes

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“…The electronic spectra of the mixed ligand complexeswere obtained in the aqueous medium and the data were recorded in Table 3.Prominent bands were observed in the ranges 299-327 nm (33445-30581cm -1 ),which were assigned to intraligand nπ* transition, due to lone electrons onC=N group of the heterocyclic ligands (Derebe et al, 2002). Their dd bands appearing in the visible region in the range 623-663 nm (15749-15083 cm -1 ) were attributed to 2 E g  2 T g transition in the octahedral field.The magnetic moments, μ eff , of the complexes were recorded in Table 1.…”

Section: Electronic Spectra and Magnetic Momentsmentioning

confidence: 99%

Article 33

2019

sfj

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Mixed ligand copper (II) complexes of ethanolamine (Ea) and urea (U) with aromatic NNʹ donors (pyridine-2-aldoxime (Pa)), 2,2ʹ-bipyridine (Bpy), 1,10-phenanthroline (Phen)) were synthesized. The complexes were characterized by melting points, percentage metal analyses, infrared and UV-Vis spectra, magnetic susceptibility and molar conductance measurements. The infrared spectra revealed that ethanolamine and urea were bonded to the central copper ion as monodentate ligands through nitrogen and oxygen atoms respectively whilethe aromaticbases were coordinated as bidentate ligands. The magnetic moments of the complexes between 1.8 and 2.1 BM were within the expected range for magnetically dilute Cu (II) complexes. The electronic spectraof the mixed ligand complexes showed λ max in the regions 299-327 cm-1 and 623-663 cm-1 for nπ* and 2 E g  2 T g transitions respectively. These values were indicative of copper (II) with octahedral geometries. The molar conductance values of the complexes in the ranges 49-110 and 5.1-21.9 Ω-1 cm 2 mol-1 , suggested their non-electrolytic nature in water and in nitromethane respectively.

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“…The coordination chemistry of tridentate amino acid derived Schiff bases [89,90] and related triden tate Schiff base [91][92][93][94][95] …”

Section: Introductionmentioning

confidence: 99%