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

  title={A halogen bond route to shorten the ultrashort sextuple bonds in Cr2 and Mo2.},
  author={Jyothish Joy and Eluvathingal D. Jemmis},
  journal={Chemical communications},
  volume={53 58},
  • J. Joy, E. Jemmis
  • Published 18 July 2017
  • Chemistry, Medicine
  • Chemical communications
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. 
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