Mannich aminomethylation reactions of a series of bis(α-amino acidato)metal(II) complexes with formaldehyde and diethylmalonate: Crystal structure of (5,5-dicarboxyethyl-3,7-diazanonanedioato)copper(II) monohydrate |
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| Authors: | Subrahmanian Supriya Aravamudhan Raghavan VR Vijayaraghavan Kandasamy Chinnakali Hoong-Kun Fun J Subramanian |
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| Institution: | 1. Department of Polymer Science, University of Madras, Guindy Campus, Chennai 600 025, India;2. Department of Physical Chemistry, University of Madras, Guindy Campus, Chennai 600025, India;3. Department of Physics, Anna University, Chennai 600 025, India;4. X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia 11800, Penang, Malaysia;5. NMR Lab, CLRI, Adyar, Chennai 600 025, India |
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| Abstract: | Mannich aminomethylation reactions involving M(aa)2, where M = Cu, Ni and aa = glycine(gly), dl-alanine(dl-ala), l-alanine(l-ala), with formaldehyde and diethylmalonate have been carried out, resulting in carboxylate appended systems in high yield. All the compounds have been characterized by UV-Vis spectroscopy, infrared spectroscopy and elemental analysis. One of the synthesized complexes, (5,5-dicarboxyethyl-3,7-diazanonanedioato)copper(II) monohydrate, has been characterized by single crystal XRD and has been used as catalyst in the hydrogen peroxide-induced degradation of pyrocatechol violet (PCV) dye. The variations in the rate of degradation of the dye with respect to change in concentration of hydrogen peroxide, dye, catalyst and pH have been studied. Effect of addition of NaCl has been studied and a suitable mechanism based on the formation of free radical species during the degradation process has been proposed. |
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| Keywords: | Diethylmalonate Metal complexes Mannich aminomethylation Pyrocatechol violet dye |
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