Double Molecules in Gases


WE have observed double molecules, for example (CO2)2, in carbon dioxide, nitrous oxide, nitrogen, oxygen, argon and xenon. It is believed that these double molecules exist in all gases at temperatures where the attractive Van der Waals interaction is of importance, and where the pressure is sufficiently high to produce a significant fraction of three-body collisions. Their existence has been predicted for many years1.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Jeans, J. H., The Dynamical Theory of Gases (Cambridge Univ. Press, 1904).

  2. 2

    Leckenby, R. E., Robbins, E. J., and Trevalion, P. A., Proc. Roy. Soc., A, 280, 409 (1964).

  3. 3

    Norton, F. J., Mass Spectroscopy in Physics Research, Nat. Bur. Stand. Circ., 522 (1953).

  4. 4

    Stogryn, D. E., and Hirschfelder, J. O., J. Chem. Phys., 31, No. 6 1531 (1959).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

ROBBINS, E., LECKENBY, R. Double Molecules in Gases. Nature 206, 1253 (1965) doi:10.1038/2061253a0

Download citation

Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.