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Dinickelaferrocene: A Ferrocene Analogue with Two Aromatic Nickeloles Realized by Electron Back‐Donation from Iron

MPG-Autoren
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Ye,  Shengfa
State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences;
Research Group Ye, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Zitation

Huang, Z., Zheng, Y., Zhang, W.-X., Ye, S., Deng, L., & Xi, Z. (2020). Dinickelaferrocene: A Ferrocene Analogue with Two Aromatic Nickeloles Realized by Electron Back‐Donation from Iron. Angewandte Chemie International Edition, 59(34), 14394-14398. doi:10.1002/anie.202007222.


Zitierlink: https://hdl.handle.net/21.11116/0000-0006-D539-A
Zusammenfassung
The first example of ferrocene analogues with two transition‐metal metallole ligands of the general formula (η5‐C4R4M)2Fe in a sandwich structure are reported. Specifically, dinickelaferrocene 2 , a type of dimetallametallocene, is efficiently synthesized from the reaction of dilithionickelole 1 with FeBr2 or FeCl2, presumably via a redox process, and is subjected to detailed experimental (single‐crystal X‐ray structural analysis, ICP‐OES, magnetometry, 57Fe Mössbauer, XPS) and theoretical (MOs, CDA, NICS, ICSS, and AICD) characterizations. Unlike ferrocene and its Cp ligands, the aromaticity of dinickelaferrocene and its nickelole ligands is accomplished by electron back‐donation from the Fe 3d orbitals to the π* orbitals of nickelole. Taken together, this work describes a new class of metallaferrocene sandwich complexes and provides a novel approach to effect aromaticity that will contribute to further development of metallocene chemistry.