Selective d/π-electron Oxidation Behaviors of a FerroceneDerivative Dimerized by Hydrogen Bonds

摘要

Molecules showing both π-and d-electron oxidations enable to change their electronicstructures by alternating the π-d oxidized sites.Recently,much attention has been given to theπ-d oxidized character change by proton transfer,which could provide not only molecularbasedmultifunctional materials with multi-responses,but also fundamental understanding ofbiological activities based on proton coupled electron transfer (PCET).However,it is stillchallenging to construct such molecules,partially due to a difficulty to turn on and off the π-conjugation between π-and d-electron oxidized sites by the protonation/deprotonationbehaviors of molecules.Herein,I report that a ferrocene-substituted 2,3-dihydroquinazolinone(complexis a candidate of molecules,where the d-electron based oxidized state would beconverted to the π-electron based one accompanied by proton transfer (Figure 1).