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%%  Ein Beispiel der DANTE-Edition
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%%  2. Auflage
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%%  Beispiel 15-05-2 auf Seite 815.
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%%  Copyright (C) 2016 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\parindent=0pt
%StartShownPreambleCommands
\usepackage[ngerman]{babel}
\usepackage{chemmacros}\chemsetup[nomenclature]{hyphen-post-space=0pt,iupac=auto}
%StopShownPreambleCommands
\begin{document}
\iupac{Bis(\hapto{5}cyclo|penta|dienyl)|eisen} \par
\iupac{\cip{2S,3S}-Weins\"aure} \par
\iupac{\a-(Tri|chloro|methyl)-\w-chloro|poly(1,4-phenylene|methylen)}
\end{document}