Reversible Activation of Water by an Air‐ and Moisture‐Stable Frustrated Rhodium Nitrogen Lewis Pair. Issue 60 (20th August 2019)

• Record Type: Journal Article
• Authors: Carmona, María; Ferrer, Joaquina; Rodríguez, Ricardo; Passarelli, Vincenzo; Lahoz, Fernando J.; García‐Orduña, Pilar; Cañadillas‐Delgado, Laura; Carmona, Daniel
• Is Part Of: Chemistry. Volume 25:Issue 60(2019)
• Page Start: 13665
• Page End: 13670
• Publication Date: 2019-08-20
• Subjects: coordination modes -- frustrated Lewis pairs -- H/D exchange -- HO−H bond activation -- reaction mechanisms; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201902452
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: [Cp*Rh(κ 3 N, N ′, P ‐L )][SbF6 ] (Cp*=C5 Me5 ), bearing a guanidine‐derived phosphano ligand L, behaves as a "dormant" frustrated Lewis pair and activates H2 and H2 O in a reversible manner. When D2 O is employed, a facile H/D exchange at the Cp* ring takes place through sequential C(sp 3 )−H bond activation. Abstract : And the beast wakes up ! The dormant FLP complex (see scheme) can be isolated as an air‐ and moisture‐stable solid. But, in solution, the dissociated active FLP state is easily accessible and the complex activates H2 O and H2, under soft conditions, in a reversible manner. Concurrently, a facile H/D exchange at the Cp* ligand, associated with water activation, was observed.