Characterization of a Diferrous Terminal Hydride Mechanistically Relevant to the Fe-Only Hydrogenases
- 29 October 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 127 (46), 16012-16013
- https://doi.org/10.1021/ja055475a
Abstract
Reduction of diferrous dithiolato complexes with hydride donor reagents affords the first example of the previously elusive terminal diferrous hydride, [Fe2(edt)(μ-CO)(H)(CO)(PMe3)4]PF6 (edt = S2C2H4). Crystallographic characterization shows that this model contains an asymmetrical semi-bridging CO trans to a terminal hydrido, as indicated in the Hred state in the D. desulfuricans enzyme. The model reacts with protons to yield H2 and rearranges via an intramolecular process to the isomeric μ-hydrido isomer, which is unreactive toward protons.Keywords
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