Synthesis and Spectroscopic Investigation of New Complexes of [8– (2– carboxyphenylazo) –6– formyl –7– hydroxy –5– methoxy –2– methylchromone with La (III) and Th (IV)]

• M. M. El-Agaili

  Department of Chemistry, Faculty of Science, Garyounis University, Benghazi - Libya.

  Author

• A. A. EL-Maihoub

  Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Garyounis, Benghazi, Libya.

  Author

New complexes of La (III) and Th (IV) ions with 8– (2– carboxyphenylazo) –6– formyl –7– hydroxy –5– methoxy –2– methylchromone (L) have been synthesized and investigated by elemental analysis and IR. Spectroscopy. The complexes of the general chemical formula ML₂Xm . nH₂O, where M; La (III) and Th (IV), X = OH^– or H₂O, m = 1 – 2, n = 6 or 8 and L = ligand have been synthesized. The IR spectra indicate that the complication occurs through the aldehydic group in position six and hydroxyl group in position seven, while the position of CO₂H and N = N groups did not change during the complexation. The molar conductance indicate that the prepared complexes are non–electrolytic.

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