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Design and Characterization of a Cu(II) Coordination Polymer Based on α-Diimine: Evaluation of the Biomimetic Activity

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The copper-based polymer is synthesized using a slow evaporation method with an α-diimine chelator (1,10-phenanthroline) as the primary ligand. The synthesized polymer is characterized by various spectroscopic studies (FT-IR, UV-visible, EPR, luminescent), powder XRD and TGA techniques. Single crystal XRD studies reveal the molecular structure as a one-dimensional (1D) coordination polymer (CP) with the composition [Cu(phen)(NO3)2]n. The FT-IR spectrum of CP further ascertains the binding modes of the ligand moiety. The copper ion is present in the +2 oxidation state and the geometry around the central metal ion is distorted square pyramidal. Moreover, CP shows a brilliant catecholase-like activity in methanol, which can easily oxidize the substrate 3,5-di-tert-butylcatechol (3,5-DTBC) to its respective quinone. Kinetic measurements suggest that the catechol oxidation rate follows saturation kinetics with respect to the substrate and first order kinetics with respect to the catalyst. CP shows a very good catalytic activity with Kcat = 8.28 h−1.

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Correspondence to M. Khalid.

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Text © The Author(s), 2019, published in Zhurnal Strukturnoi Khimii, 2019, Vol. 60, No. 11, pp. 1907–1915.

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Khan, M.S., Khalid, M., Ahmad, M.S. et al. Design and Characterization of a Cu(II) Coordination Polymer Based on α-Diimine: Evaluation of the Biomimetic Activity. J Struct Chem 60, 1833–1841 (2019).

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