Preparation et caracterisation de complexes [cis-4,4′-dinitrodibenzo-18-couronne-6, LnCl3, 3CH3CN] |
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| Authors: | A Thabet L Dogguy F Megannem |
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| Institution: | (1) Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisie |
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| Abstract: | Some new complexes between thecis-4,4′-dinitrodibenzo-18-crown-6 and rare earth chlorides LnCl3 (Ln=Nd, Gd, Yb) were synthesized in acetonitrile. Ligandcis-4,4′-dinitrodibenzo-18-crown-6 and its complexes were identified by infrared spectroscopy, X-ray diffraction and thermal
analysis (TG and DTA). Acis-trans isomerisation of the complexed ligand is observed about 148°C when heating the rare earth complex.
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| Keywords: | cis-trans isomerization new complexes |
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