Mechanistic insights on the non-innocent role of electron donors: reversible photocapture of CO 2 by Ru II -polypyridyl complexes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Dalton Transactions Année : 2019

Mechanistic insights on the non-innocent role of electron donors: reversible photocapture of CO 2 by Ru II -polypyridyl complexes

Nicolas Queyriaux
Connectez-vous pour contacter l'auteur
Sascha Ott
  • Fonction : Auteur
Leif Hammarström

Résumé

The ability of [Ru II (t Butpy)(dmbpy)(MeCN)] 2+ (1-MeCN) to capture CO 2 , with the assistance of triethanolamine (TEOA), has been assessed under photocatalytically-relevant conditions. The photolability of 1-MeCN has proven essential to generate a series of intermediates which only differ by the nature of their monodentate ligand. In DMF, ligand photoexchange of 1-MeCN to give [Ru II (t Butpy)(dmbpy)(DMF)] 2+ (1-DMF) proceeds smoothly with a quantum yield of 0.011. However, in the presence of TEOA, this process was disrupted, leading to the formation of a mixture of 1-DMF and [Ru II (t Butpy)(dmbpy)(TEOA)] + (1-TEOA). An equilibrium constant of 3 was determined. Interestingly, 1-TEOA demonstrated an ability to reversibly catch and release CO 2 making it a potentially crucial intermediate towards CO 2 reduction.
Fichier principal
Vignette du fichier
c9dt03461g(1).pdf (1.09 Mo) Télécharger le fichier
Origine : Publication financée par une institution

Dates et versions

hal-03139513 , version 1 (12-02-2021)

Identifiants

Citer

Nicolas Queyriaux, Wesley B. Swords, Hemlata Agarwala, Ben A. Johnson, Sascha Ott, et al.. Mechanistic insights on the non-innocent role of electron donors: reversible photocapture of CO 2 by Ru II -polypyridyl complexes. Dalton Transactions, 2019, 48 (45), pp.16894-16898. ⟨10.1039/C9DT03461G⟩. ⟨hal-03139513⟩
11 Consultations
21 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More