Porphyrin, hanging base

In fine with the above hypothesis, Momenteau and coworkers showed that with a proximal imidazole ligand, Fe and Mn hanging-base porphyrins, in the presence of H2O2, will carry out both epoxidation and dismutation (of H2O2) reactions, while with a phenolate proximal ligand, dismutation of H2O2 is favored by the Mn porphyrin, and is the exclusive reaction of the Fe porphyrin. Furthermore, Bruice and coworkers have shown that addition of small concentrations of NH3 or CF3CH2NH2 enhances... 

Figure 3 Structure of the hanging base capped porphyrin. Reproduced from J. Chem. Soc., Dalton Trans., 1739 (1984) by permission of the Royal Society of Chemistry...

Ether-linked hanging-base porphyrin (18) Amide-linked han g-base porphyrin (19) Double bridged porphyrin... 

For the superstructured porphyrins containing an increasing number of NHCO groups (Figure 7) see Reference 14 and for the hanging-base basket-handle (Figure 9) porphyrins References 6, 12, 15. 

Figure 9. Hanging-base basket-handle porphyrins.

Table 9. Association constant of Fe(II) in hanging base basket-handle porphyrins. 

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