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Updated: Apr 29, 2026

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
Published on: October 27, 2018
Highest recorded N-O stretching frequency for 6-coordinate {Fe-NO}7 complexes: an iron nitrosyl model for His3 active
Jia Li1, Atanu Banerjee, Piotr L Pawlak
1Department of Chemistry, Oakland University , Rochester, Michigan 48309-4477, United States.
Abstract:
We report the synthesis, structure, and reactivity of [Fe(T1Et4iPrIP)(OTf)2] [1; T1Et4iPrIP = tris(1-ethyl-4-isopropylimidazolyl)phosphine]. Compound 1 reacts reversibly with nitric oxide to afford [Fe(T1Et4iPrIP)(NO)(THF)(OTf)](OTf) (2), which is the first example of a 6-coordinate {FeNO}(7) S = 3/2 complex containing a linear Fe-N-O group. 2 exhibits the highest ν(NO) for compounds in this class. Density functional theory studies reveal an enhanced degree of β-electron transfer from π*(NO) to the Fe d orbitals accounting for the large stretching frequency.
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