Properties and infrared spectra in the potassium bromide region of 8-quinolinol and its metal chelates

Article abstract of DOI:10.1021/ic50015a021

The infrared absorption spectra in the 11-25 μ region of 8-quinolinol and the 8-quinolinol chelates of the alkaline earth ions, manganese(II), cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II), lead(II), aluminum(III), iron(III), thorium(IV), and uranium(Vl) have been recorded and band assignments have been made. A consideration of the spectral shifts has been used to study the structures of the divalent metal chelates in the solid phase. The spectral data indicate that the divalent ions which have available d-orbitals bond differently with 8-quinolinol from those without available d-orbitals. The solvate oxine in the thorium(IV) and uranium(VI) chelates is not distinguishable from the ligand oxines on the basis of the infrared data. Structures for the a and β forms of copper oxinate are proposed.