Facile proton-coupled electron transfer enabled by coordination-induced E–H bond weakening to boron. Issue 56 (21st June 2021)

• Record Type: Journal Article
• Authors: Wong, Anthony; Chakraborty, Arunavo; Bawari, Deependra; Wu, Guang; Dobrovetsky, Roman; Ménard, Gabriel
• Is Part Of: Chemical communications. Volume 57:Issue 56(2021)
• Page Start: 6903
• Page End: 6906
• Publication Date: 2021-06-21
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc02832d
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Coordination induced bond weakening (CIBW) leads to facile PCET at various E–H bonds. Abstract : We report the facile activation of aryl E–H (ArEH; E = N, O, S; Ar = Ph or C6 F5 ) or ammonia N–H bonds via coordination-induced bond weakening to a redox-active boron center in the complex, (1 − ). Substantial decreases in E–H bond dissociation free energies (BDFEs) are observed upon substrate coordination, enabling subsequent facile proton-coupled electron transfer (PCET). A drop of >50 kcal mol −1 in H2 N–H BDFE upon coordination was experimentally determined.