Abstract
The dissociation kinetics of the cobalt and copper complexes with octaethylporphyrin, its 5-phenyl, 5,15-diphenyl, and 5,10,15,20-tetraphenyl derivatives, and dodecaphenylporphyrin in acetic acid with small additions of trifluoroacetic acid were studied. In this series of complexes, the steric distortion of the tetrapyrrole macrocycle sequentially increases, which results in a regular decrease in the kinetic stability of the metal porphyrins: The dissociation rate increases by three orders of magnitude.
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Kuvshinova, E.M., Kuz'min, D.L., Dudkina, N.S. et al. Dissociation Kinetics of Copper and Cobalt Complexes with Sterically Distorted Porphyrins. Russian Journal of General Chemistry 72, 133–136 (2002). https://doi.org/10.1023/A:1015322118490
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DOI: https://doi.org/10.1023/A:1015322118490