Behavior of bipyridine derivative Cu(I) complexes in donor solvents

Cretu Carmen and Aparaschivei Diana and Badea Valentin and Szerb Elisabeta I. and Costisor Otilia: Behavior of bipyridine derivative Cu(I) complexes in donor solvents.

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Abstract

Cu(I) complexes are known as highly emissive compounds having interesting fluorescence applications[1].Theluminescence is generated by more intense metal to ligand charge transfer (MLCT) electronic transitions for Cu(I), affording longer excited-statelifetimes compared to transient d-d excited state of Cu(II)[2].Herein we report the behavior of two bipyridine derivative Cu(I) complexes containing phenanthroline and biquinoline ligands, respectively, in donor solvents as dimethylsulfoxide and acetonitrile.The Cu(I) phenanthroline complex (1) is unstable in solution,due to oxidation of Cu(I) to Cu(II) in time, accompanied by change in coordination geometry from tetrahedral to trigonal bipyramidal. The Cu(I) biquinoline complex (2) is more stable in donor solvents,the stability increasing at low temperatures with the stabilization of tetragonal geometry of Cu(I).In case of biquinoline ligand, this kind of geometry is stabilized by the bulky aryl substituentsatαposition with respect to the pyridine nitrogen.

Item Type: Conference or Workshop Item
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2016
Volume: 22
ISBN: 978-963-306-507-5
Page Range: p. 111
Event Title: International Symposium on Analytical and Environmental Problems (22.) (2016) (Szeged)
Related URLs: http://acta.bibl.u-szeged.hu/55893/
Uncontrolled Keywords: Kémia - előadáskivonat
Additional Information: Bibliogr.: 111. p. ; összefoglalás angol nyelven
Date Deposited: 2018. Dec. 11. 13:52
Last Modified: 2022. Aug. 08. 15:48
URI: http://acta.bibl.u-szeged.hu/id/eprint/56049

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