Supramolecular structure, mixed ligands and substituents effect on the spectral studies of oxovanadium(IV) complexes of bioinorganic and medicinal relevance

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
A Z el-SonbatiSh M Morgan

Abstract

An interesting series of heterocyclic mixed ligand of oxovanadium(IV) complexes have been synthesized by the reaction of vanadium(IV) sulfate with rhodanine azo (HL(n)) in the presence of β-diketon (LH). The elemental analysis, magnetic moments, spectral (UV-Vis, IR, (1)HNMR and ESR) with thermal studies were used to characterize the isolated complexes. The IR showed that the ligands (HL(n) and LH) act as a monobasic bidentate through the (NN), oxygen keto moiety and oxygen atom of the two enolate groups thereby forming a six-membered. The molar conductivities show that all the complexes are non-electrolytes. The ESR spectra indicate that the free electron is in d(xy) orbital. The calculated bonding parameter indicates that in-plane σ-bonding is more covalent than in-plane π-bonding. The coordination geometry around oxovanadium(IV) in all complexes is a hex-coordinated trans octahedral, with one bidentate ligand (L(n)), and one bidentate ligand (L). Electronic and magnetic data proposed the octahedral structure for all complexes under investigation. ESR spectra of VO(2+) reveal data that confirmed the proposed structure. The value of covalency factor (β(1)(∗))(2) and orbital reduction factor K accounts for the covalent nature o...Continue Reading

References

Oct 25, 2002·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·A Z el-SonbatiA A Al-Sarawy
Sep 14, 2010·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·M A DiabR H Mohamed
Jan 14, 2011·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·A Z El-SonbatiM Z Balboula
Sep 13, 2011·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·N A El-GhamazO L Salem

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Citations

Mar 19, 2014·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·A Z El-SonbatiSh M Morgan
Apr 5, 2015·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·N A El-GhamazSh M Morgan
Mar 3, 2015·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·N A El-GhamazS G Nozha
Aug 27, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·M A DiabA M Barakat
Apr 27, 2021·Journal of Biomolecular Structure & Dynamics·R ReshmaJ Johnson

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