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Synthesis, Characterization and Phosphodiester Bond Cleavage Studies of the Dinuclear, Thioacetatocobalt(II) of 3-methylsulfanylpropionic Acid Complex

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Abstract

A new dinuclear cobalt(II) complex containing monothioacetate and 3-methylsulfanylpropionate ligands was synthesized and fully characterized by spectral, magnetic moment, electrochemical, elemental, thermal and FAB mass analyses data. In order to explore the role of labile metal complexes in promoting phosphodiester hydrolysis, kinetic and mechanistic studies were performed. The hydrolyses of ethyl 4-nitrophenylphosphate (ENPP) and the bis(4-nitrophenyl)phosphate (BNPP) complex are catalytic, as determined by the observations of both rate enhancement and turnover. The pH versus rate profile indicates that deprotonation of the metal-coordinated water occurs to form the active catalyst.

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Correspondence to Tarkeshwar Gupta.

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Gupta, T., Baranwal, B.P. & Devi, R. Synthesis, Characterization and Phosphodiester Bond Cleavage Studies of the Dinuclear, Thioacetatocobalt(II) of 3-methylsulfanylpropionic Acid Complex. Transition Met Chem 31, 123–128 (2006). https://doi.org/10.1007/s11243-005-6371-6

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Keywords

  • Hydrolysis
  • Ethyl
  • Cobalt
  • Catalysis
  • Active Catalyst