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Mixed benzohydroxamato-acetylacetonato metal complexes: spectral, thermal and photochemical behaviour

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Summary

Bis(acetylacetonato)VOII,−CoII,−NiII,−CuII,−ZnII, −UO II2 and tris(acetylacetonato)FeIII react with benzohydroxamic acid to yield the corresponding mixed ligand complexes as a result of displacement of one acetylacetone molecule. Intermolecular association may be the reason for six-coordination geometry around the metal ions. A t.g.a. study of the complexes shows, in most cases, initial loss of alcohol and water molecules associated with the complexes; subsequent decomposition steps are characterised by very sharp weight loss. The photochemical stability of the complexes has been studied. Intraligand excitation causes a decomposition in the case of FeIII and VOII-complexes but no detectable effect for CoII, NiII, CuII, ZnII, or UO II2 -complexes.

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Authors and Affiliations

  1. Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt

    Aref A. M. Aly, Asma I. El-Said & Ahmed H. Osman

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  1. Aref A. M. Aly
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  2. Asma I. El-Said
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  3. Ahmed H. Osman
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Aly, A.A.M., El-Said, A.I. & Osman, A.H. Mixed benzohydroxamato-acetylacetonato metal complexes: spectral, thermal and photochemical behaviour. Transition Met Chem 15, 403–406 (1990). https://doi.org/10.1007/BF01177471

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