Unidirectional PCET

Figure 17.3 General geometries of PCET reactions defined by the spatial configuration of the four transfer elements, De, Dp, Ae, and Ap. In the Type A reaction, ET and PT coordinates are unidirectional with little or no site-differentiation. The latter case is formally an HAT reaction. Type B also represents unidirectional PCET, but with significant differen-...

Tab. 17.5 Rates for unimolecular and bimolecular electron transfer for porphyrin-based DeDp-ApAe complexes with amidinium-carboxylate interfaces. 7 7.3 Unidirectional PCET... 

Figure 3.2 Uni-directional (A) and bi-directional (B) PCET. Synonyms for unidirectional PCET are collinear PCET, concerted electron-proton transfer (CEP, ref. 236), electron-proton transfer (EPT, 120 and 237), concerted proton-electron transfer (CPET, 238 and 239) and concerted electron transfer proton transfer (ETPT, ref. 240). Bi-directional PCET is also termed orthogonal PCET, bi-directional concerted electron-proton transfer (CEP, ref. 236) and multisite electron proton transfer (MS-EPT, ref. 237). Adapted from ref. 21.

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