Artículo
Spin State in Homoleptic Iron(II) Terpyridine Complexes Influences Mixed Valency and Electrocatalytic CO2 Reduction
Suhr, Simon; Schröter, Nicolai; Kleoff, Merlin; Neuman, Nicolás Ignacio
; Hunger, David; Walter, Robert; Lücke, Clemens; Stein, Felix; Demeshko, Serhiy; Liu, Hang; Reissig, Hans-Ulrich; van Slageren, Joris; Sarkar, Biprajit
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
04/2023
Editorial:
American Chemical Society
Revista:
Inorganic Chemistry
ISSN:
0020-1669
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Two homoleptic Fe(II) complexes in different spin states bearing superbasic terpyridine derivatives as ligands are investigated to determine the relationship between spin state and electrochemical/spectroscopic behavior. Antiferromagnetic coupling between a ligand-centered radical and the high-spin metal center leads to an anodic shift of the first reduction potential and results in a species that shows mixed valency with a moderately intense intervalence-charge-transfer band. The differences afforded by the different spin states extend to the electrochemical reactivity of the complexes: while the low-spin species is a precatalyst for electrocatalytic CO2 reduction and leads to the preferential formation of CO with a Faradaic efficiency of 37%, the high-spin species only catalyzes proton reduction at a modest Faradaic efficiency of approximately 20%.
Palabras clave:
TERPYRIDINE
,
IRON
,
SPIN
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Articulos(INTEC)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Citación
Suhr, Simon; Schröter, Nicolai; Kleoff, Merlin; Neuman, Nicolás Ignacio; Hunger, David; et al.; Spin State in Homoleptic Iron(II) Terpyridine Complexes Influences Mixed Valency and Electrocatalytic CO2 Reduction; American Chemical Society; Inorganic Chemistry; 62; 16; 4-2023; 6375-6386
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