It can be, but a more typical one I use is \ce{Cu_{1-x}Pd_{x}} and that has
to be wrapped in @@latex:...@@.

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu


On Tue, Nov 24, 2015 at 4:00 AM, Eric S Fraga <e.fraga@ucl.ac.uk> wrote:

> On Monday, 23 Nov 2015 at 14:42, John Kitchin wrote:
> > True enough! I wasn't thinking very large when I had the question in
> > mind! I end up with a lot of chemical formulas like this
> > @@latex:\ce{H_{2}O}@@  in my writing because the {} inside the {} makes
>
> OT but just wondering: shouldn't this be @@latex:\ce{H2O}@@?  And this
> would work just fine without the @@ directive for LaTeX export at least.
>
> --
> : Eric S Fraga (0xFFFCF67D), Emacs 24.5.1, Org release_8.3.2-215-gb4af3f
>