Math & Science ⇒ chemmacros | Ion Charges

[mhle]

When I specify an ion charge with \mch or \pch by chemmacros the number is aligned too low

test.png (5 KiB) Viewed 3503 times

Here is a minimal example:

Code: Select all

\documentclass[12pt,a4paper,oneside]{article}
\usepackage{chemmacros}

\title{Test}

\begin{document}
  \begin{reaction}
    2 \Hpl{} + S2O3 \mch[2] -> S + SO2 + H2O
  \end{reaction}
\end{document}

Is there any way to fix this?

Thanks, Mads.

[cgnieder]

Hi,

In the manual section 24.4 "Charges and other Subscripts" (paragraph "Charge Commands") it says (emphasis by me):

You don't need to use \mch and related commands inside \ch. Indeed, you shouldn't use them as they might mess with the subscript and superscript alignment. e chemmacros option circled is obeyed by \ch.

This also holds for the reactions environments (unless you use the option "method=mhchem"). I will make that more clear in the next version of the manual.

This should do (and needs less typing anyway):

Code: Select all

\documentclass[12pt,a4paper,oneside]{article}
\usepackage{chemmacros}

\title{Test}

\begin{document}
  \begin{reaction}
    2 H+ + S2O3^2- -> S + SO2 + H2O
  \end{reaction}
\end{document}

cm_charges.png (4.03 KiB) Viewed 3472 times

Regards