Synthesis and Characterization of Trinuclear [Ni₂Ru] Complexes with Bridging Thiolate or Selenolate Donors for Electrocatalytic Proton Reduction

Abstract

xbSmS = 1,2-bis(4-mercapto-3,3-dimethyl-2-thiabutyl)benzene; H 2 xbSmSe = 1,2-bis(2-thiabutyl-3,3-dimethyl-4-selenol)benzene; phen = phenanthroline]. The two [Ni 2 Ru] complexes were characterized by ESI-MS, NMR spectroscopy, elemental analysis, single-crystal X-ray crys-

Synthesis of cobalt(ii) phenolate selenoether complexes to mimic hydrogenase-like activity for hydrogen gas production

“…43 In 2017, Bouwman and co-workers reported the synthesis of a nickel–ruthenium-based complex for the electrocatalytic hydrogen evolution reaction (Chart 1). 44,45 Also, Marinescu and co-workers have shown electrocatalytic proton reduction using a cobalt and nickel selenolate complex, which results in a low overpotential (350 mV) in comparison to its sulfur analog, which shows an overpotential of 567 mV (Chart 1). 22 The same group isolated the monomeric form of the cobalt selenolate polymer for a mechanistic understanding of the electrocatalytic HER.…”

“…43 In 2017, Bouwman and co-workers reported the synthesis of a nickel-ruthenium-based complex for the electrocatalytic hydrogen evolution reaction (Chart 1). 44,45 Also, Marinescu and co-workers have shown electrocatalytic proton reduction Chart 1 Metal-chalcogen complexes for the hydrogen evolution reaction.…”

Isolation of monomeric copper(ii) phenolate selenoether complexes using chelating ortho-bisphenylselenide-phenolate ligands and their electrocatalytic hydrogen gas evolution activity

“…[14][15][16] Selenium has also been explored as a ligand in cobalt selenolate complexes 17 (Chart 1) and metal containing (Co and Ni) coordinated polymers for electrocatalytic proton reduction. [18][19][20] However, these molecular selenolate complexes are not stable due to the weak metal-selenium covalent bonds and/or the presence of labile alkyl-selenium bonds under electrocatalytic conditions and form a solid deposition/or precipitate during the electrocatalysis. The chelating diaryl selenide ligand-derived complexes that contain stable carbon-selenium bonds, which could enhance the stability of such complexes, have not been studied.…”

“…14–16 Selenium has also been explored as a ligand in cobalt selenolate complexes 17 (Chart 1) and metal containing (Co and Ni) coordinated polymers for electrocatalytic proton reduction. 18–20…”

Synthesis, Structure, and Electrochemical Properties of O‐Alkyldithiophosphato Nickel Complexes with Chelating Aminodiphosphine Ligands

“…The reason lies in that [NiFe] and [FeFe] hydrogenases catalyze the interconversion of H 2 with protons and reducing equivalents at very high rates . Mimicking the active sites of [NiFe] and [FeFe] hydrogenases is of interest since it is useful for the design and preparation of HER catalysts with inexpensive metals such as Ni and Fe . Although recent years have witnessed major advances in the field of HER catalysts, one of the key challenges for simple and efficient catalysts still exists.…”