5
$\begingroup$

According to Frlec et al.,[1] theoretical studies indicated that there is a possibility (albeit slim) that neutral xenon octafluoride ($\ce{XeF8}$) might exist.

I am curious as to what structure this molecule might possibly have. In terms of hybridisation theory, I have only learnt cases up to seven-coordination ($\mathrm{d^3sp^3}$ or $\mathrm{sp^3d^3}$), where the molecular geometry is pentagonal bipyramidal. However, answers based on other frameworks (e.g. molecular orbital theory) would also be welcome.

My conjecture: could its structure possibly be hexagonal bipyramidal?

  1. Frlec, B.; Holloway, J. H.; Slivnik, J.; Šmalc, A.; Volavšek, B.; Zemljič, A. An examination of the possibility of the existence of xenon octafluoride. J. Inorg. Nucl. Chem. 1970, 32 (8), 2521–2527. DOI: 10.1016/0022-1902(70)80296-2.
Improve this question
$\endgroup$
0

1 Answer 1

Reset to default
5
$\begingroup$

There does seem to be a good body of evidence, including your reference, for the existence of xenon octafluoride.

Regarding it's structure, according to VSEPR theory as tabulated here, the structure is square anti prism:

enter image description here

Improve this answer
$\endgroup$
1
  • 7
    $\begingroup$ This is the xenon octafluoride dianion $\ce{[XeF8]^2-}$. Simple "xenon octafluoride" would be neutral $\ce{XeF8}$. $\endgroup$
    – orthocresol ♦
    Apr 5, 2017 at 12:42

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.