I've seen so many compounds containing xenon, and xenon was mostly the central atom, and if we had 2 xenons they would never bond directly to each other. I was curious if it is possible to have for example 2 xenons in a compound that are bonded directly to each other?

  • $\begingroup$ As you said yourself, we haven't seen any examples yet. $\endgroup$ Mar 27, 2023 at 8:15
  • $\begingroup$ From a quick search, ncbi.nlm.nih.gov/pmc/articles/PMC7435756 explains: "Noble gas (or aerogen) bond (NgB) can be outlined as the attractive interaction between an electron-rich atom or group of atoms and any element of Group-18 acting as an electron acceptor." $\endgroup$
    – Buck Thorn
    Mar 27, 2023 at 10:30

1 Answer 1


One example is the $\ce{Xe2+}$ cation. Quoting from the abstract of Formation of the dixenon cation, $\ce{Xe2+}$, in fluoroantimonate(V) media by oxidation–reduction methods: spectroscopic properties of the ion

A green species has been generated both by oxidation of gaseous xenon with a dioxygenyl salt and by reduction in antimony pentafluoride solution of the $\ce{XeF+}$ cation, e.g. with water or a suitable metal; the Raman, u.v.-visible and e.s.r. spectra of the product are all consistent with the identity $\ce{Xe2+}$, representing the first homonuclear noble-gas cation to be characterized in the condensed phases.