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Updated: Jun 23, 2026

Preparation of 6-aminocyclohepta-2,4-dien-1-one Derivatives via Tricarbonyl(tropone)iron
Published on: August 12, 2019
An iron complex with an unsupported Fe-Fe bond
1Department of Chemistry, Texas A&M University, College Station, TX 77842-3255, USA. murillo@tamu.edu
Researchers achieved full metal bonding by reducing an iron(II) complex, creating a rare, unsupported iron-iron bond. This discovery advances the understanding of metal-metal interactions in chemistry.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
Background:
- Werner-type iron(II) complexes are typically six-coordinate and mononuclear.
- The study focuses on the reduction of such a complex to explore metal-metal bonding.
Discussion:
- The isolation of a compound with an unsupported Fe-Fe bond is reported.
- The experimental Fe-Fe bond distance was measured at 2.6869(6) Å.
- Computational analysis indicated a bond order of 0.5 for the Fe-Fe interaction.
Key Insights:
- Demonstrates the possibility of forming direct, unsupported metal-metal bonds in iron complexes.
- Provides experimental evidence for a low-bond-order Fe-Fe interaction.
Outlook:
- This finding opens new avenues for designing novel metal-ligand frameworks.
- Further research could explore the reactivity and catalytic potential of such iron-iron bonded species.
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