Cu(II), Ni(II), Co(II), Mn(II) and Zn(II) form 1:2 complexes while Fe(III) forms 1:3 complex with δ(3-carboxy, 4-hydroxy benzoyl) pentanoic acid. Their structures have been proposed on the basis of analytical, spectral, thermal and magnetic measurements. The infrared spectra provide an evidence for the replacement of the aromatic carboxylic group hydrogen but not the phenolic group hydrogen.
Volume 135, 2023
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