HypervalencyChemical BondingCity: AachenHypervalent MoleculeMolecular GeometryChemical Sciences

Hypervalence revisited. The odd case of hexamethyl selenium.

https://doi.org/10.59350/pz290-4cm13
Published in Henry Rzepa's Blog

One thread that runs through this blog is that of hypervalency. It was therefore nice to come across a recent review of the concept[cite]10.1039/c5sc02076j[/cite] which revisits the topic, and where a helpful summary is given of the evolving meanings over time of the term hypervalent.

References

General Chemistry

A quantitative definition of hypervalency

https://doi.org/10.1039/c5sc02076j
Published in Chemical Science

The concept of hypervalency has had a long but troubled history. Although several attempts have been made to dispense with the concept altogether, it remains in widespread use. By developing a simple but quantitative measure of hypervalency, the concept can be rehabilitated to provide valuable chemical insights in the context of Lewis models.