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Issue 48, 2016
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Characterization of a monocyanide model of FeFe hydrogenases – highlighting the importance of the bridgehead nitrogen for catalysis

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Abstract

An azadithiolate bridged monocyanide derivative [Fe2(adt)(CO)5(CN)] of [Fe2(adt)(CO)4(CN)2]2− has been prepared and extensively characterized as a model of the [FeFe]-hydrogenase active site, using a combination of FTIR spectroscopy, electrochemical methods and catalytic assays with chemical reductants. The presence of two basic nitrogen sites opens up multiple protonation pathways, enabling catalytic proton reduction. To our knowledge [Fe2(adt)(CO)5(CN)] represents the first example of a cyanide containing [FeFe]-hydrogenase active site mimic capable of catalytic H2 formation in aqueous media.

Graphical abstract: Characterization of a monocyanide model of FeFe hydrogenases – highlighting the importance of the bridgehead nitrogen for catalysis

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Publication details

The article was received on 23 May 2016, accepted on 10 Aug 2016 and first published on 11 Aug 2016


Article type: Paper
DOI: 10.1039/C6DT02061E
Citation: Dalton Trans., 2016,45, 19242-19248
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    Characterization of a monocyanide model of FeFe hydrogenases – highlighting the importance of the bridgehead nitrogen for catalysis

    C. Esmieu and G. Berggren, Dalton Trans., 2016, 45, 19242
    DOI: 10.1039/C6DT02061E

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