Biomimetic [2Fe-2S] Clusters with Extensively Delocalized Mixed-Valence Iron Centers

Yao S, Meier F, Lindenmaier N, Rudolph R, Blom B, Adelhardt M, Sutter J, Mebs S, Haumann M, Meyer K, Kaupp M, Driess M (2015)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Publisher: Wiley-VCH Verlag

Book Volume: 54

Pages Range: 12506-12510

DOI: 10.1002/anie.201506788

Abstract

A complete series of biomimetic [2Fe-2S] clusters, [((LFe)-Fe-Dep)(2)(mu-S)(2)] (3, L(De)p = CH[CMeN(2,6-Et2C6H3)](2)), [((LFe)-Fe-Dep)(2)(mu-S)(2)K] (4), [(L(De)pFe)(2)(mu-S)(2)][Bu4N] (5, Bu=n-butyl), and [((LFe)-Fe-Dep)(2)(mu-S)(2)K-2] (6), could be synthesized and characterized. The all-ferric [2Fe-2S] cluster 3 is readily accessible through the reaction of [((LFe)-Fe-Dep)(2)(mu-H)(2)] (2) with elemental sulfur. The chemical reduction of 3 with one molar equivalent of elemental potassium affords the contact ion pair K+[2Fe-2S](-) (4) as a one-dimensional coordination polymer, which in turn reacts with [Bu4N] Cl to afford the separate ion pair [Bu4N](+)[2Fe-2S](-) (5). Further reduction of 4 with potassium furnishes the super-reduced all-ferrous [2Fe-2S] cluster 6. Remarkably, complexes 4 and 5 are [2Fe-2S] clusters with extensively delocalized Fe2+Fe3+ pairs as evidenced by Fe-57 Mossbauer, X-ray absorption and emission spectroscopy (XAS, XES) and in accordance with DFT calculations.

Authors with CRIS profile

Involved external institutions

How to cite

APA:

Yao, S., Meier, F., Lindenmaier, N., Rudolph, R., Blom, B., Adelhardt, M.,... Driess, M. (2015). Biomimetic [2Fe-2S] Clusters with Extensively Delocalized Mixed-Valence Iron Centers. Angewandte Chemie International Edition, 54, 12506-12510. https://dx.doi.org/10.1002/anie.201506788

MLA:

Yao, Shenglai, et al. "Biomimetic [2Fe-2S] Clusters with Extensively Delocalized Mixed-Valence Iron Centers." Angewandte Chemie International Edition 54 (2015): 12506-12510.

BibTeX: Download