Diazine bridged dinuclear rhenium complex: New molecular material for the CO2 conversion

A PRELIMINARY STUDY ON ELECTROCATALYTIC REDUCTION OF CO2 USING FAC-ReI(CO)3(4,4′-DI-METHYL-2,2′-BIPYRIDYL)((E)-2-((3-AMINO-PYRIDIN-4-YLIMINO)-METHYL)-4,6-DI-TERT-BUTYLPHENOL))+ COMPLEX

“…[27][28] More recently, a family of the same kind of complexes using 4,4'-di-substituted-2,2'-bipyridyls with substutuents like -COOH, -CH 3 , t-Bu, -OMe as equatorial ligands has been prepared and its electrocatalytic properties for the reduction of CO 2 evaluated. [29][30][31][32] A characteristic voltammetric pattern was observed in acetonitrile for all these compounds that consist on two reduction processes; the first one ranging between -1.34 V to -1.49 V vs SCE (E 1/2 , reversible; 1 electron) and the second one process ranging between -1.70 V to -1.80 V vs SCE (E pc , irreversible; 1 electron). The negative trend for the potential values found of both of these reduction peaks match very well with the increasing trend of pKa values on the different ligands used.…”

“…The best electrocatalytic results is found for the 4,4'-di-tert-Butyl substituted, derivative for the CO 2 conversion to CO with Faradaic efficiency close to 100%. [30][31][32] Motivated by this fact, we initiated studies of chemical design of suitable rhenium (I) tricarbonyl compounds. The main focus of the present manuscript is not the synthesis of C2 per se, but the study of the C2 complex regarding its potential properties as electrocatalytic agent for CO 2 reduction and compared to previously published experimental observations.…”

Photoinduced intercomponent excited-state decays in a molecular dyad made of a dinuclear rhenium(i) chromophore and a fullerene electron acceptor unit

“…[6][7][8]10 Such studies, also supported by theoretical analyses, 6a have demonstrated that first reduction is monoelectronic, reversible and centered on the L ligand, whereas first oxidation is usually reversible and bielectronic in nature, and involves partly delocalized orbitals receiving contributions from rhenium-centered and X-centered orbitals. Partial irreversibility of the oxidation process is found when X is a chloride, probably as a consequence of the highly positive potential value induced by the presence of the strongly electron withdrawing chlorides.…”

Comparative study of the anchorage and the catalytic properties of nanoporous TiO2 films modified with ruthenium (II) and rhenium (I) carbonyl complexes

“…These findings encourage the development of new methods to immobilize ruthenium-based catalysts onto semiconducting or conducting supports with the purpose of obtaining heterogeneous catalysts. Furthermore, other transition metal complexes such as rhenium compounds have been studied for their photo-and electrocatalytic properties for the reduction of CO 2 [21][22][23]. Among several reported compounds, the ruthenium (II) and rhenium (I) complexes harboring carbonyl ligands have promising catalytic properties with the choice of suitable bidentate ligands [24][25][26][27].…”