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Kinetics of anation of chromium(III) by L-phenylalanine

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Summary

The kinetics of anation of chromium(III) species, [Cr(H2O)6]4+ and [Cr(H2O)5OH]2+, by L-phenylalanine in aqueous acid has been studied spectrophotometrically. Effects of varying [substrate], [ligand], [H+], μ, % ethanol and temperature were investigated. The kinetic data suggest a mechanism where outersphere-associations [between chromium(III) species and phenylalanine in the zwitterionic form] precede anation. Comparison of the results with published data suggest an Ia path for the [Cr(H2O)6]3+ reaction and Id path for the [Cr(H2O)5OH]2+ reaction.

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Authors and Affiliations

  1. Department of Chemistry, Aligarh Muslim University, 202001, Aligarh, India

    Kabir-ud-Din, Iqrar A. Khan & Mohammad Shahid

Authors
  1. Kabir-ud-Din
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  2. Iqrar A. Khan
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  3. Mohammad Shahid
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Kabir-ud-Din, Khan, I.A. & Shahid, M. Kinetics of anation of chromium(III) by L-phenylalanine. Transition Met Chem 12, 557–560 (1987). https://doi.org/10.1007/BF01023849

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  • DOI: https://doi.org/10.1007/BF01023849

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