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      https://www.ias.ac.in/article/fulltext/jcsc/126/06/1635-1640

    • Keywords

       

      Nickel(II); Schiff base; X-ray structure; Catecholase activity.

    • Abstract

       

      A new nickel(II) complex [Ni(L)] (1) [H2L = 1,1′-(1E,1′E)-(propane-1,3-diylbis(azan-1-yl-1-ylidene))bis(methan-1-yl-1-ylidene)dinaphthalen-2-ol] was synthesized and X-ray crystallographically characterized. 1 crystallizes in orthorhombic crystal system with Cmc21 space group. The unit cell dimensions of the crystal are a = 30.6345(4)Å, b = 8.45340(10)Å, c = 7.75180(10)Å. Structural analysis reveals a tetradentate chelation behaviour of the dianionic ligand H2L having a distorted square planar geometry around Ni(II) with NiN2O2 chromophore in 1. The title complex 1 behaves as an effective catalyst towards oxidation of 3,5-ditertiarybutyl catechol (3,5-DTBC) in acetonitrile to its corresponding quinone derivative in air. The reaction follows first-order reaction kinetics with rate constant 4.28 × 10−5 min-1. The reaction follows Michaelis-Menten enzymatic kinetics with a turnover number of (𝐾𝑐𝑎𝑡) 140.72 h-1 in acetonitrile.

    • Author Affiliations

       

      Pradipta Kumar Basu1 Merry Mitra2 Amrita Ghosh1 Latibuddin Thander3 Chia -Her Lin4 Rajarshi Ghosh2

      1. Department of Chemistry, Durgapur Government College, Durgapur, Burdwan 713 214, India
      2. Department of Chemistry, The University of Burdwan, Burdwan 713 104, India
      3. Department of Chemistry, HooghlyMohsin College, Chinsurah, Hooghly 712 101, India
      4. Department of Chemistry, Chung Yuan Christian University, Chung Li, Taiwan 32023, Republic of China
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  • Journal of Chemical Sciences | News

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