Synthesis, Characterization and Spectral Studies of Noble Heterobinuclear Complexes of Transition Metal Ions and their Biological Activity
| Autor: | Abhay Nanda Srivastava, Netra Pal Singh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Magnetic moment
Chemistry Inorganic chemistry General Chemistry law.invention lcsh:Chemistry Crystallography chemistry.chemical_compound Ultraviolet visible spectroscopy Unpaired electron Salicylaldehyde lcsh:QD1-999 Spin crossover law Octahedral molecular geometry Molecular symmetry Electron paramagnetic resonance |
| Zdroj: | E-Journal of Chemistry, Vol 8, Iss 2, Pp 809-814 (2011) |
| ISSN: | 2090-9810 0973-4945 |
| Popis: | Some noble heterobinuclear complexes of transition metal ions with bis(salicylaldehyde)malonyl-dihydrazone in the presence of 5-nitroindazole Cu(II) / Ni(II)- chloride of the type [ML1M‘L2Cl2] or [ML1FeL2Cl2]Cl, where M = Ni(II), Cu(II) and M' = Mn(II), Co(II), have been prepared. All the complexes have been characterized by IR, UV vis and EPR spectroscopy, elemental analysis, magnetic moment and molar conductance measurement. Spectral studies and magnetic moment measurement in DMF suggest the covalent nature of the complexes, except the [ML1FeL2Cl2]Cl complex which is 1:1 electrolyte. An octahedral geometry is proposed for M‘ and square planer for M for the heterobinuclear complexes. The low value of magnetic moment and overlapping EPR signals are due to spin crossover since both of the metals have unpaired electrons with same molecular symmetry. The lowering of the magnetic moment has been discussed. The biological activity (antifungal and antibacterial) of the represented compounds has been studied. |
| Databáze: | OpenAIRE |
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