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Molecule of the year? “CrN123”, a molecule with three different types of Cr-N bond.

https://doi.org/10.59350/pym27-2nn84
Published in Henry Rzepa's Blog

Here is a third candidate for the C&EN “molecule of the year” vote. This one was shortlisted because it is the first example of a metal-nitrogen complex exhibiting single, double and triple bonds from different nitrogens to the same metal[cite]10.1039/c5sc04608d[/cite] (XUZLUB has a 3D display available at DOI: 10.5517/CC1JYY6M). Since no calculation of its molecular properties was reported, I annotate some here.

References

General Chemistry

A complex with nitrogen single, double, and triple bonds to the same chromium atom: synthesis, structure, and reactivity

https://doi.org/10.1039/c5sc04608d
Published in Chemical Science
Authors Evan P. Beaumier, Brennan S. Billow, Amrendra K. Singh, Shannon M. Biros, Aaron L. Odom

A complex with single, double and triple bonds between nitrogen and the same metal center has been synthesized, [NCr(NPh)(NPri2)2]−. The complex shows differential activity, with some electrophiles attacking the imido and others the nitrido.