133952-54-2Relevant academic research and scientific papers
Water exchange controls the complex-formation mechanism of water-soluble iron(III) porphyrins: Conclusive evidence for dissociative water exchange from a high-pressure 17O NMR study
Schneppensieper, Thorsten,Zahl, Achim,Van Eldik, Rudi
, p. 1678 - 1680 (2001)
The water-exchange reactions of three modified iron(III) porphyrins were studied in acidic medium as a function of temperature and pressure using 17O NMR spectroscopic techniques. The positive activation entropies and activation volumes support a dissociative mechanism (see scheme showing the transition state; L = nucleophile, H2O, NO). A comparison with available literature data reveals that the rate and mechanism of complex-formation reactions of such metal porphyrins are controlled by the water-exchange process.
