scholarly journals Hydrogenase biomimetics with redox-active ligands: Electrocatalytic proton reduction by [Fe2(CO)4(κ2-diamine)(μ-edt)] (diamine = 2,2′-bipy, 1,10-phen)

Polyhedron ◽  
2016 ◽  
Vol 116 ◽  
pp. 127-135 ◽  
Author(s):  
Shishir Ghosh ◽  
Ahibur Rahaman ◽  
Katherine B. Holt ◽  
Ebbe Nordlander ◽  
Michael G. Richmond ◽  
...  
Keyword(s):  
Proton Reduction ◽  
Redox Active Ligands ◽  
Redox Active

scholarly journals Hydrogenase biomimetics with redox-active ligands: Synthesis, structure and electrocatalytic studies on Fe2(CO)4(K2-dppn)(µ-edt) (edt = ethanedithiolate; dppn = 1,8-bis(diphenylphosphino)naphthalene)

2018 ◽  
Author(s):  
Graeme Hogarth ◽  
Shishir Ghosh ◽  
Nathan Hollingsworth ◽  
Michael Richmond ◽  
Shariff Kabir ◽  
...  
Keyword(s):  
Bond Cleavage ◽  
Major Product ◽  
Proton Reduction ◽  
Catalytic Current ◽  
Redox Active Ligands ◽  
Hydride Complexes ◽  
Redox Active ◽  
Active Nature ◽  
Strong Acids ◽  
Reversible Reduction

Addition of the bulky redox-active diphosphine 1,8-bis(diphenylphosphino)naphthalene (dppn) to [Fe2(CO)6(-edt)] (1) (edt = 1,2-ethanedithiolate) affords [Fe2(CO)4(2-dppn)(-edt)] (3) as the major product, together with small amounts of a P-C bond cleavage product [Fe2(CO)5{1-PPh2(1-C10H7)}(-edt)] (2). The redox properties of 3 have been examined by cyclic voltammetry and it has been tested as a proton-reduction catalyst. It undergoes a reversible reduction at E1/2 = –2.18 V and exhibits two overlapping reversible oxidations at E1/2 = –0.08 V and E1/2 = 0.04 V. DFT calculations show that while the HOMO is metal-centred (Fe-Fe -bonding), the LUMO is primarily ligand-based but also contains an antibonding Fe-Fe contribution, highlighting the redox-active nature of the diphosphine. It is readily protonated upon addition of strong acids to afford two isomeric hydride complexes and catalyzes the electrochemical reduction of protons at Ep = –2.00 V in the presence of CF3CO2H. The catalytic current indicates that it is one of the most efficient diiron electrocatalysts for the reduction of protons, albeit operating at quite negative potential.

scholarly journals Small Molecule-Induced Intramolecular Electron “Pitch and Catch” in a RhodiumIComplex with Substitutionally Inert Redox-Active Ligands.

1999 ◽  
Vol 38 (18) ◽  
pp. 4176-4176
Author(s):  
Igor V. Kourkine ◽  
Caroline S. Slone ◽  
Chad A. Mirkin ◽  
Louise M. Liable-Sands ◽  
Arnold L. Rheingold
Keyword(s):  
Small Molecule ◽  
Redox Active Ligands ◽  
Redox Active

Proton reduction in the presence of oxygen by iron porphyrin enabled with 2nd sphere redox active ferrocenes

2021 ◽  
Vol 42 (8) ◽  
pp. 1327-1331
Author(s):  
Biswajit Mondal ◽  
Pritha Sen ◽  
Abhishek Dey
Keyword(s):  
Iron Porphyrin ◽  
Proton Reduction ◽  
Redox Active

Metal-Metal Interactions in Heterobimetallic Complexes with Dinucleating Redox-Active Ligands

2016 ◽  
Vol 128 (7) ◽  
pp. 2452-2456 ◽  
Author(s):  
Daniël L. J. Broere ◽  
Dieuwertje K. Modder ◽  
Eva Blokker ◽  
Maxime A. Siegler ◽  
Jarl Ivar van der Vlugt
Keyword(s):  
Redox Active Ligands ◽  
Metal Interactions ◽  
Heterobimetallic Complexes ◽  
Redox Active ◽  
Metal Metal

Synthesis of fluorescent molecular switches based on porphyrinoids covalently linked with redox active ligands

2022 ◽  
Vol 1247 ◽  
pp. 131407
Author(s):  
Kharu Nisa ◽  
Gaurav Kumar Mishra ◽  
M. Thirumal ◽  
Shive M.S. Chauhan
Keyword(s):  
Molecular Switches ◽  
Redox Active Ligands ◽  
Redox Active ◽  
Covalently Linked

Effect of complex formation on the half wave potentials of redox active ligands

1989 ◽  
Vol 260 (2) ◽  
pp. 249-257 ◽  
Author(s):  
Kwok-Keung Shiu ◽  
D.Jed Harrison
Keyword(s):  
Complex Formation ◽  
Redox Active Ligands ◽  
Redox Active ◽  
Half Wave

scholarly journals Circumventing Intrinsic Metal Reactivity: Radical Generation with Redox-Active Ligands

2017 ◽  
Vol 23 (60) ◽  
pp. 15030-15034 ◽  
Author(s):  
Jérémy Jacquet ◽  
Khaled Cheaib ◽  
Yufeng Ren ◽  
Hervé Vezin ◽  
Maylis Orio ◽  
...  
Keyword(s):  
Redox Active Ligands ◽  
Redox Active ◽  
Radical Generation
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