Math & Science ⇒ Error after Superscripts or Subscripts

[Sassi86]

Hello all

I've a huge problem. I'm writing my bachelor thesis in LyX and because I'm doing sciences I have a lot numbers to superscript or subscript like in CO2 or H2O the 2 has to be smaller and down.

After superscripts or subscripts I always get an error message and this leads to the fact, that I can't open my document in PDF anymore. What can I do?

Would be nice if somebody could help me

[cgnieder]

Hi Sassi86,

Welcome to the LaTeX community!

It is impossible to tell what is happening unless you show as a minimal example document that let's us reproduce the error.

However, there are two packages that allow easy input of chemical formulae:

1. package mhchem: this is loaded by adding

   Code: Select all

   \usepackage[version=3]{mhchem}

   to the preamble.
   In the document you can then use ERT \ce{H2O} to get the formula of water.
2. package chemmacros (or rather it's subpackage chemformula) -- needs an up to date TeX distribution: this is loaded by adding

   Code: Select all

   \usepackage{chemmacros}

   In the document you can then use ERT \ch{H2O} to get the formula of water.

Regards