A new organometallic compound challenges a fundamental principle of textbook chemistry

Image showing the molecular structure of the new 20-electron ferrocene derivative, highlighting nitrogen, iron, hydrogen, and carbon atoms.

Molecular structure of the new 20-electron ferrocene derivative, highlighting nitrogen (blue), iron (orange), hydrogen (green), and carbon (grey) atoms.

Date:
03 July 2025
Credit:
Modified from Figure 2c in Takebayashi, S., Ariai, J., Kartashov, S.V. et al. From 18- to 20-electron ferrocene derivatives via ligand coordination. Nature Communications (2025). https://doi.org/10.1038/s41467-025-61343-7.  Licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). 
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