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Cyanide Ligand Assembly by Carbon Atom Transfer to an Iron Nitride

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journal contribution
posted on 21.09.2017, 00:00 by Jorge L. Martinez, Hsiu-Jung Lin, Wei-Tsung Lee, Maren Pink, Chun-Hsing Chen, Xinfeng Gao, Diane A. Dickie, Jeremy M. Smith
The new iron­(IV) nitride complex PhB­(iPr2Im)3FeN reacts with 2 equiv of bis­(diisopropyl­amino)­cyclo­propenylidene (BAC) to provide PhB­(iPr2Im)3­Fe­(CN)­(N2)­(BAC). This unusual example of a four-electron reaction involves carbon atom transfer from BAC to create a cyanide ligand along with the alkyne iPr2N–CC–NiPr2. The iron complex is in equilibrium with an N2-free species. Further reaction with CO leads to formation of a CO analogue, which can be independently prepared using NaCN as the cyanide source, while reaction with B­(C6F5)3 provides the cyanoborane derivative.