Isolation and characterization of a high-spin mixed-valent iron dinitrogen complex.
Isolation and characterization of a high-spin mixed-valent iron dinitrogen complex.
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DOI:
10.1039/c8cc07294a
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发表时间:
2018-11-27
期刊:
影响因子:
--
通讯作者:
Holland PL
中科院分区:
文献类型:
--
作者:
McWilliams SF ;Bunting PC ;Kathiresan V ;Mercado BQ ;Hoffman BM ;Long JR ;Holland PL
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. A new mixed-valence iron-dinitrogen complex has localized valence by IR and Mossbauer spectroscopies, and slow magnetic relaxation.
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