Structural and HER studies of diphosphine-monothiolate complexes [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-dppe)] and [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-DPEPhos)]

Faujdar, Hemlata; Spannenberg, Anke; Kaur‐Ghumaan, Sandeep

doi:10.1016/j.ica.2019.119227

Cited by 3 publications

(2 citation statements)

References 90 publications

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“…The bidentate dppv ligand bridged the diiron site and occupied the cisoid basal/basal position. A P(1)‐Fe(1)‐Fe(2)‐P(2) torsion angle of −3.703° was observed [50] …”

Section: Resultsmentioning

confidence: 99%

[FeFe] Hydrogenase: 2‐Propanethiolato‐Bridged {FeFe} Systems as Electrocatalysts for Hydrogen Production in Acetonitrile‐Water

Agarwal

Kaur‐Ghumaan

2023

Eur J Inorg Chem

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Diiron bis(monothiolato)-bridged hydrogenase mimics [Fe 2 (μ-S i Pr) 2 (CO) 6 ] A ( i Pr = isopropyl) and their phosphine derivatives [Fe 2 (μ-S i Pr) 2 (CO) 5 (L 1/2 )] and [Fe 2 (μ-S i Pr) 2 (CO) 4 (L 3 )] {tricyclohexylphosphine (L 1 , PCy 3 ) 1, triphenylphosphine (L 2 , PPh 3 ) 2 and cis-1,2-bis(diphenylphosphino)ethylene (L 3 , dppv) 3} have been synthesized and investigated for electrocatalytic proton reduction activity in CH 3 CNÀ H 2 O. Based on the FTIR data (red-shift), the electron-donating ability of the phosphines followed the order: dppv > PCy 3 > PPh 3 (average shift value with respect to complex A was 61 (1), 51 (2) and 80 (3) cm À 1 ). From CV measurements, it was seen that the catalytic reduction potential (acetic acid as proton source) shifted considerably towards positive potentials (anodic shift) on changing the solvent from pure CH 3 CN to CH 3 CNÀ H 2 O (4 : 1 v/v). An increase in the percentage of water in CH 3 CN led to the decomposition of complexes 1 and 3. Though complexes A and 2 were stable in CH 3 CNÀ H 2 O (3 : 2 v/v), no improvement in electrocatalytic currents was observed.

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“…The bidentate dppv ligand bridged the diiron site and occupied the cisoid basal/basal position. A P(1)‐Fe(1)‐Fe(2)‐P(2) torsion angle of −3.703° was observed [50] …”

Section: Resultsmentioning

confidence: 99%

[FeFe] Hydrogenase: 2‐Propanethiolato‐Bridged {FeFe} Systems as Electrocatalysts for Hydrogen Production in Acetonitrile‐Water

Agarwal

Kaur‐Ghumaan

2023

Eur J Inorg Chem

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“…The limited examples reported include mostly hexacarbonyl and very few phosphine substituted mono‐ or diiron complexes [51–71] . Our group has also reported the redox and electrocatalytic properties of bis(monothiolato)‐based {FeFe} systems [72–77] wherein we have shown that the efficiency and stability of the catalysts vary with the type of monothiolate ligand used.…”

Section: Introductionmentioning

confidence: 91%

Synthesis, Characterization and Electrochemical Studies of bis(Monothiolato) {FeFe} Complexes [Fe₂(μ‐SC₆H₄‐OMe‐m)₂(CO)₅L] (L = CO, PCy₃, PPh₃)

Kumar

Kaur‐Ghumaan

2022

ChemistrySelect

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Reaction of Fe 3 (CO) 12 with 3-methoxybenzenethiol in toluene afforded a new bis(monothiolato) hexacarbonyl diiron complex [Fe 2 (μ-SC 6 H 4 -OMe-m) 2 (CO) 6 ] 1. Substitution of CO in complex 1 with monodentate phosphine ligands (PCy 3 and PPh 3 ) further afforded two new complexes [Fe 2 (μ-SC 6 H 4 -OMe-m) 2 (CO) 5 (PCy 3 )] 2 and [Fe 2 (μ-SC 6 H 4 -OMe-m) 2 (CO) 5 (PPh 3 )] 3. All the three complexes were characterized by FTIR, NMR, UV-Vis, mass and elemental analysis. Further, complexes 1-3 were found to be electrocatalytically active for proton reduction in acetonitrile in the presence of both weak and strong acids as proton sources.

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Homogeneous HER electrocatalysis using monothiolate ligand-based {FeS} complexes: A review

Agarwal,

Kumar,

Ritu

et al. 2024

Electrochimica Acta

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Structural and HER studies of diphosphine-monothiolate complexes [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-dppe)] and [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-DPEPhos)]

Cited by 3 publications

References 90 publications

[FeFe] Hydrogenase: 2‐Propanethiolato‐Bridged {FeFe} Systems as Electrocatalysts for Hydrogen Production in Acetonitrile‐Water

[FeFe] Hydrogenase: 2‐Propanethiolato‐Bridged {FeFe} Systems as Electrocatalysts for Hydrogen Production in Acetonitrile‐Water

Synthesis, Characterization and Electrochemical Studies of bis(Monothiolato) {FeFe} Complexes [Fe₂(μ‐SC₆H₄‐OMe‐m)₂(CO)₅L] (L = CO, PCy₃, PPh₃)

Homogeneous HER electrocatalysis using monothiolate ligand-based {FeS} complexes: A review

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Structural and HER studies of diphosphine-monothiolate complexes [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-dppe)] and [Fe2(CO)4(μ-naphthalene-2-thiolate)2(μ-DPEPhos)]

Cited by 3 publications

References 90 publications

[FeFe] Hydrogenase: 2‐Propanethiolato‐Bridged {FeFe} Systems as Electrocatalysts for Hydrogen Production in Acetonitrile‐Water

[FeFe] Hydrogenase: 2‐Propanethiolato‐Bridged {FeFe} Systems as Electrocatalysts for Hydrogen Production in Acetonitrile‐Water

Synthesis, Characterization and Electrochemical Studies of bis(Monothiolato) {FeFe} Complexes [Fe2(μ‐SC6H4‐OMe‐m)2(CO)5L] (L = CO, PCy3, PPh3)

Homogeneous HER electrocatalysis using monothiolate ligand-based {FeS} complexes: A review

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Synthesis, Characterization and Electrochemical Studies of bis(Monothiolato) {FeFe} Complexes [Fe₂(μ‐SC₆H₄‐OMe‐m)₂(CO)₅L] (L = CO, PCy₃, PPh₃)