Sökning: onr:"swepub:oai:DiVA.org:kth-19317" >
Attachment of a Hyd...
Attachment of a Hydrogen-Bonding Carboxylate Side Chain to an FeFe -Hydrogenase Model Complex : Influence on the Catalytic Mechanism
-
- Gao, Weiming (författare)
- Stockholms universitet,Institutionen för organisk kemi
-
- Sun, Junliang (författare)
- Stockholms universitet,Avdelningen för strukturkemi
-
- Åkermark, Torbjörn (författare)
- KTH,Tillämpad elektrokemi
-
visa fler...
-
- Li, Mingrun (författare)
- Stockholms universitet,Avdelningen för strukturkemi
-
- Eriksson, Lars (författare)
- Stockholms universitet,Avdelningen för strukturkemi
-
- Sun, Licheng (författare)
- KTH,Organisk kemi
-
- Åkermark, Björn (författare)
- Stockholms universitet,Institutionen för organisk kemi
-
visa färre...
-
(creator_code:org_t)
- Weinheim : Wiley, 2010
- 2010
- Engelska.
-
Ingår i: Chemistry - A European Journal. - Weinheim : Wiley. - 0947-6539 .- 1521-3765. ; 16:8, s. 2537-2546
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Azapropanedithiolate (adt)-bridged model complexes of [FeFe]-hydrogenase bearing a carboxylic acid functionality have been designed with the aim of decreasing the potential for reduction of protons to hydrogen. Protonation of the bisphosphine complexes 4-6 has been studied by in situ IR and NMR spectroscopy, which revealed that protonation with triflic acid most likely takes place first at the N-bridge for complex 4 but at the Fe Fe bond for complexes 5 and 6. Using an excess of acid, the diprotonated species could also be observed, but none of the protonated species was sufficiently stable to be isolated in a pure state. Electrochemical studies have provided an insight into the catalytic mechanisms under strongly acidic conditions, and have also shown that complexes 3 and 6 are electro-active in aqueous solution even in the absence of acid, presumably due to hydrogen bonding. Hydrogen evolution, driven by visible light, has been observed for three-component systems consisting of [Ru(bpy)(3)](2+), complex 1, 2, or 3, and ascorbic acid in CH3CN/D2O solution by on-line mass spectrometry.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Nyckelord
- electrochemistry
- electron transfer
- enzyme model
- iron-hydrogenase
- proton reduction
- active-site models
- fe-only hydrogenase
- coupled electron-transfer
- iron hydrogenase
- electrochemical properties
- structure/function
- relationships
- proton reduction
- generation
- activation
- ligands
- Chemistry
- Kemi
- Organic chemistry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas