Dual-pathway square scheme mechanism

Fig. 5. Dual-pathway square scheme mechanism for electron transfer involving the Cun/I([9]aneS3)tt system. The vertical reactions involve ligand gain or loss while the horizontal reactions represent electron transfer. Reproduced from Ref. (6) by permission of the Royal Society of Chemistry.

Figure 13.27 Dual-pathway square scheme mechanism that accounts for the rearrangements induced by the monoelectronic reduction of deprotonated rotaxane 92+. The species A and C represent the stable structure of the deprotonated rotaxane and its monoreduced form, respectively, whereas and D are metastable intermediates. Note that the exact position of the macrocycle along the axle in the reduced forms and C is not known. From a simple digital simulation of the cyclic voltammetric patterns, the following values have been obtained = - 0.59V, E°dc = - 0.34V, /cAD 0.15S- da<2.5s kBC > 100 s and kCB 1 s V...

Figure 4. Proposed dual-pathway square scheme mechanism for the Cu 7Cu electron transfer process. (A) and (B) represent the stable forms of Cu" and Cu complexes, respectively, while the species (C) and (D) represent metastable conformers.

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See also in sourсe #XX -- [ ]

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