Published in Henry Rzepa's Blog

I noted in an earlier post the hypothesized example of (CO) 3 Fe⩸C[cite]10.1039/d0cp03436c[/cite] as exhibiting a carbon to iron quadruple bond and which might have precedent in known five-coordinate metal complexes where one of the ligands is a “carbide” or C ligand. I had previously mooted that the Fe⩸C combination might be replaceable by an isoelectronic Mn⩸N pair which could contain a quadruple bond to the nitrogen.

References

Inorganic ChemistryPhysical and Theoretical Chemistry

Spectroscopic and Computational Studies of Spin States of Iron(IV) Nitrido and Imido Complexes

Published in Inorganic Chemistry
Authors Lukas Bucinsky, Martin Breza, Wei-Tsung Lee, Anne K. Hickey, Diane A. Dickie, Ismael Nieto, Jordan A. DeGayner, T. David Harris, Karsten Meyer, J. Krzystek, Andrew Ozarowski, Joscha Nehrkorn, Alexander Schnegg, Karsten Holldack, Rolfe H. Herber, Joshua Telser, Jeremy M. Smith