Summary
The composition of 3,5-diBr-PADAP metal chelates was determined by liquid chromatography employing appropriate eluents and non-polar bonded stationary phase. The metal-to-ligand ratios were 1∶2, 1∶2 and 1∶2 for Cu(II), Co(III) and Cr(III) respectively, and the V(V)-to-ligand ratio found to be 1∶1∶1 in V(V)-3,5-diBr-PADAP-H2O2 in the presence of H2O2. The results are in agreement with literature data.
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Zhao, Y. Composition of 2-(3,5-dibromo-2-pyridylazo) diethylaminophenol chelates by liquid chromatography. Chromatographia 37, 284–286 (1993). https://doi.org/10.1007/BF02278635
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DOI: https://doi.org/10.1007/BF02278635