Isolation and characterization of a high-spin mixed-valent iron dinitrogen complex

Sean F. McWilliams; Philip C. Bunting; Venkatesan Kathiresan; Brandon Q. Mercado; Brian M. Hoffman; Jeffrey R. Long; Patrick L. Holland

doi:10.1039/c8cc07294a

Isolation and characterization of a high-spin mixed-valent iron dinitrogen complex

Sean F. McWilliams, Philip C. Bunting, Venkatesan Kathiresan, Brandon Q. Mercado, Brian M. Hoffman, Jeffrey R. Long, Patrick L. Holland^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We report a rare example of a mixed-valence iron compound with an FeNNFe core, which gives insight into the structural, spectroscopic, and magnetic influences of single-electron reductions and oxidations. In the new compound, the odd electron is localized as judged from Mössbauer spectra at 80 K and infrared spectra at room temperature, and the backbonding into the N₂ unit is intermediate between diiron(i) and diiron(0) congeners. Magnetic susceptibility and relaxation studies on the series of FeNNFe compounds show significant magnetic anisotropy, but through-barrier pathways enable fairly rapid magnetic relaxation.

Original language	English (US)
Pages (from-to)	13339-13342
Number of pages	4
Journal	Chemical Communications
Volume	54
Issue number	95
DOIs	https://doi.org/10.1039/c8cc07294a
State	Published - 2018

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
Chemistry(all)
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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title = "Isolation and characterization of a high-spin mixed-valent iron dinitrogen complex",

abstract = "We report a rare example of a mixed-valence iron compound with an FeNNFe core, which gives insight into the structural, spectroscopic, and magnetic influences of single-electron reductions and oxidations. In the new compound, the odd electron is localized as judged from M{\"o}ssbauer spectra at 80 K and infrared spectra at room temperature, and the backbonding into the N2 unit is intermediate between diiron(i) and diiron(0) congeners. Magnetic susceptibility and relaxation studies on the series of FeNNFe compounds show significant magnetic anisotropy, but through-barrier pathways enable fairly rapid magnetic relaxation.",

author = "McWilliams, {Sean F.} and Bunting, {Philip C.} and Venkatesan Kathiresan and Mercado, {Brandon Q.} and Hoffman, {Brian M.} and Long, {Jeffrey R.} and Holland, {Patrick L.}",

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T1 - Isolation and characterization of a high-spin mixed-valent iron dinitrogen complex

AU - McWilliams, Sean F.

AU - Bunting, Philip C.

AU - Kathiresan, Venkatesan

AU - Mercado, Brandon Q.

AU - Hoffman, Brian M.

AU - Long, Jeffrey R.

AU - Holland, Patrick L.

N1 - Publisher Copyright: This journal is © The Royal Society of Chemistry.

PY - 2018

Y1 - 2018

N2 - We report a rare example of a mixed-valence iron compound with an FeNNFe core, which gives insight into the structural, spectroscopic, and magnetic influences of single-electron reductions and oxidations. In the new compound, the odd electron is localized as judged from Mössbauer spectra at 80 K and infrared spectra at room temperature, and the backbonding into the N2 unit is intermediate between diiron(i) and diiron(0) congeners. Magnetic susceptibility and relaxation studies on the series of FeNNFe compounds show significant magnetic anisotropy, but through-barrier pathways enable fairly rapid magnetic relaxation.

AB - We report a rare example of a mixed-valence iron compound with an FeNNFe core, which gives insight into the structural, spectroscopic, and magnetic influences of single-electron reductions and oxidations. In the new compound, the odd electron is localized as judged from Mössbauer spectra at 80 K and infrared spectra at room temperature, and the backbonding into the N2 unit is intermediate between diiron(i) and diiron(0) congeners. Magnetic susceptibility and relaxation studies on the series of FeNNFe compounds show significant magnetic anisotropy, but through-barrier pathways enable fairly rapid magnetic relaxation.

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JO - Chemical Communications

JF - Chemical Communications

SN - 1359-7345

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ER -

Isolation and characterization of a high-spin mixed-valent iron dinitrogen complex

Abstract

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