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2 files

Low-Valent Ferrocenes

submitted on 22.07.2020, 08:52 and posted on 23.07.2020, 05:58 by Hayoung Song, Giyun Kwon, Cooper Citek, Seungwon Jeon, Kisuk Kang, Eunsung Lee
Here, we report the first isolable low-valent biscyclopentadienyl iron complexes stabilized by NHC-functionalized ligands (NHC-Cps), which were characterized by electron paramagnetic resonance (EPR) and 57Fe Mössbauer spectroscopy. Additional theoretical studies on these formally low-valent ferrocene complexes clearly explain the origin of their thermodynamic stability and the orbital interactions between iron and NHC-Cp. Exploiting the facile Fe(II/I) redox chemistry, we successfully demonstrated that the NHC-Fc compounds can be applied as anolytes for redox-flow batteries. These low-valent species will not only deepen our understanding of the intrinsic chemistry of low-valent ferrocene but have the potential to open the way for rational design of highly-reduced metallocene derivatives for various applications.


Email Address of Submitting Author


Pohang University of Science and Technology


Republic of Korea

ORCID For Submitting Author


Declaration of Conflict of Interest

No conflict of interest