Issue 58, 2017

A halogen bond route to shorten the ultrashort sextuple bonds in Cr2 and Mo2

Abstract

Sextuple bonded group 6 diatomics Cr2 and Mo2 possess ultrashort metal–metal bonds. Yet their bond dissociation energy is very low. The destabilising nature of σ-bonds is responsible for this. Selective extraction of these σ-electrons via a σ-hole on a halogen bond donor shortens and strengthens the metal–metal bond. This study constitutes a hitherto unexplored application of halogen bonding and an example for the true violation of bond order–bond strength relation.

Graphical abstract: A halogen bond route to shorten the ultrashort sextuple bonds in Cr2 and Mo2

Supplementary files

Article information

Article type
Communication
Submitted
16 Jun 2017
Accepted
23 Jun 2017
First published
27 Jun 2017

Chem. Commun., 2017,53, 8168-8171

A halogen bond route to shorten the ultrashort sextuple bonds in Cr2 and Mo2

J. Joy and E. D. Jemmis, Chem. Commun., 2017, 53, 8168 DOI: 10.1039/C7CC04653G

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