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Issue 58, 2017
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A halogen bond route to shorten the ultrashort sextuple bonds in Cr2 and Mo2

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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

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Publication details

The article was received on 16 Jun 2017, accepted on 23 Jun 2017 and first published on 27 Jun 2017


Article type: Communication
DOI: 10.1039/C7CC04653G
Citation: Chem. Commun., 2017,53, 8168-8171
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    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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