Electric Literature of 57709-61-2, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.57709-61-2, Name is 1,10-Phenanthroline-2,9-dicarboxylic acid, molecular formula is C14H8N2O4. In a Article£¬once mentioned of 57709-61-2
Complexation of NpV ions with 1,10-phenanthroline-2,9-dicarboxylic acid: Spectrophotometric and microcalorimetric studies
The complexation of NpV ions with a tetradentate ligand with oxygen and nitrogen donors, 1,10-phenanthroline-2,9-dicarboxylic acid (denoted as H2L), was studied in aqueous solutions by spectrophotometric and calorimetric methods. NpV ions form a very strong 1:1 complex, NpO2L-, with the stability constant log beta = 11.73 ¡À 0.02 in 0.1 M NaClO4 at 25 C. It is a much stronger complex than those of NpV ions with related ligands such as picolinic acid or dipicolinic acid, as the higher denticity of 1,10-phenanthroline-2,9-dicarboxylic acid results in a larger entropic effect on the complexation. It is expected that the amide derivatives of 1,10-phenanthroline-2,9-dicarboxylic acid would be excellent extractants in the separation of NpV ions, which are problematic in actinide separation processes owing to their very low extractability by many extractants.
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Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI