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Compatibility of nitrilotriacetate andN-methylisatin-β-amidinohydrazone in the coordination sphere of transition metal ions

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A study of the competition of nitrilotriacetate (NTA) andN-methylisatin-β-amidinohydrazone (β-MIAG) in the coordination sphere of transition metal ions has been carried out by calculating the reproportionation constant which relates the stability of the mixed-ligand complex to those of the complexes formed by each ligand independently. NTA and β-MIAG are incompatible ligands, and the mixed-ligand complexes formed are less stable than either of the parent complexes. This is also supported by the change in free energy occurring during mixed-ligand complex formation. All these studies have been carried out at 30±0.5°C and μ=0.1 M NaClO4 in 50% v/v aqueous dioxan medium.

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Authors and Affiliations

  1. Department of Chemistry, University of Delhi, 110007, Delhi, India

    Kakali Sarkar & Bhagwan S. Garg

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  1. Kakali Sarkar
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  2. Bhagwan S. Garg
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Sarkar, K., Garg, B.S. Compatibility of nitrilotriacetate andN-methylisatin-β-amidinohydrazone in the coordination sphere of transition metal ions. Transition Met Chem 12, 327–329 (1987). https://doi.org/10.1007/BF01024024

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  • DOI: https://doi.org/10.1007/BF01024024

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