Mixed-Valence Iron Complexes Containing End-On Bridging Cyaphide Ions
Iron cyanide compounds are among the oldest known synthetic coordination compounds, dating back to the early 18<sup>th</sup> century. By contrast, iron complexes of the cyaphide ion (C≡P<sup>-</sup>)─a heavy valence isoelectronic analog of the cyanide ion─are unknown. Herein we report the synthesis of highly stable mono- and bis-cyaphide complexes of iron(II), namely Fe(depe)<sub>2</sub>(Cl)(CP) and Fe(depe)<sub>2</sub>(CP)<sub>2</sub> (depe = 1,2-bis(diethylphosphino)ethane). These iron(II) cyaphide complexes are capable of further coordination to iron(I) in a hitherto unknown linear coordination geometry, affording the conjugated multimetallic mixed-valence complexes [{Fe(depe)<sub>2</sub>}<sub>2</sub>(μ-CP)(N<sub>2</sub>)][BAr<sup>F</sup><sub>4</sub>]<sub>2</sub> and [{Fe(depe)<sub>2</sub>}<sub>3</sub>(μ-CP)<sub>2</sub>][OTf]<sub>2</sub>.
Authors
- Christine M. Thomas (ORCID: https://orcid.org/0000-0001-5009-0479)
- José M. Goicoechea (ORCID: https://orcid.org/0000-0002-7311-1663)
- Álvaro García‐Romero (ORCID: https://orcid.org/0000-0003-3738-1989)
- Chenyang Hu (ORCID: https://orcid.org/0000-0002-8475-6168)
- Eric S. Yang (ORCID: https://orcid.org/0000-0002-0851-655X)
- Jess Fletcher
Institutions
- Mansfield University (US)
- Oxford Research Group (GB)
- University of Oxford (GB)
- Indiana University Bloomington (US)
- The Ohio State University (US)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2024-10-08
- DOI
- https://doi.org/10.1021/jacs.4c11741
- Citations
- 8
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.94
Funders
- National Science Foundation
- Ohio State University
- Engineering and Physical Sciences Research Council