# Hybridization states of the 8 orbitals (*) of Xe and Os

1. May 25, 2010

### dextercioby

Dear all,

can you point me to a book reference where the hybridization states of the 8 orbitals (*) of Xe and Os in these 2 compounds $\mbox{XeF_{8}}$ and $\mbox{OsF_{8}}$ are justified in agreement with the quantum theory?

Do these 16 bonds involve the "f" orbitals or not ?

Thank you

Last edited: May 26, 2010
2. May 25, 2010

### alxm

Re: Hybridization

This post makes little sense to me.
Quantum theory is not at odds with valence-bond theory; the latter is derived from the former. These compounds have a lot more than 8 orbitals. XeF8 is not a stable compound (XeF6 is) and I don't know that OsF8 has been observed in practice either.

Anyway, in classical VBT, the osmium compound would probably have f-hybrid orbitals involved directly, but not xenon hexafluoride.

Shaik's book on modern valence-bond theory is the best on the topic.

3. May 26, 2010

### dextercioby

Re: Hybridization

At the first glance http://en.wikipedia.org/wiki/Xenon#Halides seems pretty ok. The whole article seems pretty ok.

So let's choose the part here

<The xenon fluorides behave as both fluoride acceptors and fluoride donors, forming salts that contain such cations as XeF+ and Xe2F3+, and anions such as XeF5−, XeF7−, and XeF82−>.

Can the bonds in the last ion be justified by hybridization theory ? I'm thinking f2sp3d2 ?

Ok, the wiki page on Os doen't mention the F_8 compound, but what about the F_7 ? Should't that be fsp3d2 ?

Last edited: May 26, 2010
4. May 26, 2010

### DrDu

Re: Hybridization

In main group compounds, neither d nor f orbitals contribute to bonding or hybridization.
For a modern valence bond description see e.g.:

http://dx.doi.org/10.1016/S1380-7323(99)80022-3 [Broken]

Last edited by a moderator: May 4, 2017