Title
Dinitrogen Coordination to a High-Spin Diiron(I/II) Species
Document Type
Article
Publication Date
5-23-2022
Abstract
Dinitrogen coordination to iron centers underpins industrial and biological fixation in the Haber–Bosch process and by the FeM cofactors in the nitrogenase enzymes. The latter employ local high-spin metal centers; however, iron–dinitrogen coordination chemistry remains dominated by low-valent states, contrasting the enzyme systems. Here, we report a high-spin mixed-valent cis-(μ-1,2-dinitrogen)diiron(I/II) complex [(FeBr)2(μ-N2)Lbis]− (2), where [Lbis]− is a bis(β-diketiminate) cyclophane. Field-applied Mössbauer spectra, dc and ac magnetic susceptibility measurements, and computational methods support a delocalized S=7/2 Fe2N2 unit with D=−5.23 cm−1 and consequent slow magnetic relaxation.
Identifier
PMID: 35302701
DOI
10.1002/anie.202202329
Publisher
Wiley
ISSN
14337851
Repository Citation
Torres, J. F., Oi, C. H., Moseley, I. P., El-Sakkout, N., Knight, B. J., Shearer, J., García-Serres, R., ... & Murray, L. J. (2022). Dinitrogen coordination to a high-spin diiron(I/II) species. Angewandte Chemie - International Edition, 61(22), Article e202202329. https://doi.org/10.1002/anie.202202329
Publication Information
Angewandte Chemie - International Edition