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Abstract <p>One mononuclear cobalt(II) complex of the type [Co(L)(OAc)]PF<sub>6</sub> (L = <i>N,N</i>′-[bis(pyridin-2-yl)benzylidene]-1,3-propanediamine) was prepared by reactions of the building units and characterized. Single crystal X-ray diffraction study was made for the exact knowledge of the coordination sphere. Structural analysis reveal cobalt(II) center is a distorted octahedral geometry with a CoN<sub>4</sub>O<sub>2</sub> chromophore ligated by four N-atoms of the tetradentate Schiff base (L) along with two O-atoms of acetate in a chelating fashion. The synthesized complex displayed catecholase activity, involving the oxidation of catechol derivative to quinone derivative, with <i>k</i><sub>cat</sub> of 6.59  ×  10<sup>–2</sup> h<sup>–1</sup> in methanol.</p>

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Synthesis, Structure, and Catecholase Activity of Mononuclear Cobalt(II) Acetate Complex Containing a Neutral N-donor Tetradentate Schiff Base

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • S. Khan,
  • A. Chatterjee

摘要

Abstract

One mononuclear cobalt(II) complex of the type [Co(L)(OAc)]PF6 (L = N,N′-[bis(pyridin-2-yl)benzylidene]-1,3-propanediamine) was prepared by reactions of the building units and characterized. Single crystal X-ray diffraction study was made for the exact knowledge of the coordination sphere. Structural analysis reveal cobalt(II) center is a distorted octahedral geometry with a CoN4O2 chromophore ligated by four N-atoms of the tetradentate Schiff base (L) along with two O-atoms of acetate in a chelating fashion. The synthesized complex displayed catecholase activity, involving the oxidation of catechol derivative to quinone derivative, with kcat of 6.59  ×  10–2 h–1 in methanol.