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Issue 43, 2019
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Nickel(ii) PE1CE2P pincer complexes (E = O, S) for electrocatalytic proton reduction

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Abstract

Nickel(II) chloride and thiolate complexes with iPrPE1CE2PiPr (E = O, S) pincer ligands were investigated as electrocatalysts for the hydrogen evolution reaction in CH3CN in the presence of acetic acid and trifluoroacetic acid. The bis(thiophosphinite) (S,S) chloride complex reduced protons at the lowest overpotential in comparison with the bis(phosphinite) (O,O) and mixed phosphinite–thiophosphinite (O,S) complexes. A combination of electrochemical, NMR and UV-vis spectroscopic and mass spectrometric experiments provides mechanistic insights into the catalytic cycle for proton reduction to dihydrogen.

Graphical abstract: Nickel(ii) PE1CE2P pincer complexes (E = O, S) for electrocatalytic proton reduction

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Publication details

The article was received on 10 Sep 2019, accepted on 27 Sep 2019 and first published on 30 Sep 2019


Article type: Paper
DOI: 10.1039/C9DT03626A
Dalton Trans., 2019,48, 16322-16329

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    Nickel(II) PE1CE2P pincer complexes (E = O, S) for electrocatalytic proton reduction

    S. Kaur-Ghumaan, P. Hasche, A. Spannenberg and T. Beweries, Dalton Trans., 2019, 48, 16322
    DOI: 10.1039/C9DT03626A

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