Good morning to all,

I need to place a argument under the compound.

For the first compound it's ok, but for the second and third compounds 

the argument is placed in front an not bellow. 

How I can fix that? thanks.

\usemodule[chemic]

\startformula

  \chemical{Fe^{3+}}{}{yellow}

  \chemical{PLUS}

  \chemical{SCN^{-}}{}{colourless}

  \chemical{EQUILIBRIUM}

  \chemical{[FeSCN]^{2+}}{}{red}

\stopformula