Write chemical equation with square arrow?

Question

I asked this question previously but when I used \polyglossia package code does not give me the same result, If any one can help.

\documentclass{article}
\usepackage{chemfig}
\usepackage{fontspec}
\usepackage{polyglossia}
\setmainlanguage[numerals=maghrib]{arabic}
\setotherlanguage{english}
\newfontfamily\arabicfont[Script=Arabic,Scale=1.0]{Simplified Arabic}
\newcommand{\en}{\textenglish}
\newcommand{\ar}{\textarabic}
\setchemfig{atom sep=2em}
\begin{document}
    \schemestart
    \chemfig{CH_3-CH_2-CH_2-CH_2-OH}
    \arrow(.mid east--.mid west)
    {->[ \footnotesize\chemfig{K_2Cr_2O_7}/\chemfig{H^{+}} ]}[,1.6]
    \chemfig{CH_3-CH_2-CH_2-C(=[2]O)
        -@{h3}H}
    \arrow(.mid east--.mid east){0}[-90,2]
    \chemfig{CH_3-CH_2-CH_2-C(=[2]O)-O@{h4}H}
    \schemestop
    \chemmove{
        \draw[shorten <=5pt, shorten >=5pt]
        (h3) -- ([xshift=25pt]h3.center) -- node[pos=0.5,right] {\footnotesize [O]} ([xshift=25pt]h4.center) -- (h4);
    }
\end{document}

This does not seem to be cause by the use of the poyglossia package, but moe so due to the fact, that you most likely used XeLaTeX to compile the MWE in your question. For a related question, see also: How to fix chemfig's chemmove in XeTeX — leandriis, Jul 25 '21 at 08:51
What about an alternative approach such as \documentclass{article} \usepackage{chemfig} \setchemfig{atom sep=2em} \begin{document} \noindent \schemestart \chemfig{CH_3-CH_2-CH_2-CH_2-OH} \arrow(.mid east--.mid west) {->[ \footnotesize\chemfig{K_2Cr_2O_7}/\chemfig{H^{+}} ]}[,1.6] \chemfig{CH_3-CH_2-CH_2-C(=[2]O)-@{h3}H} \arrow(@c2--){->[*{0}{\footnotesize[O]}]}[-90] \chemfig{CH_3-CH_2-CH_2-C(=[2]O)-O@{h4}H} \schemestop \end{document}. This should also work when compiled using XeLaTeX: https://i.stack.imgur.com/jH6lH.png — leandriis, Jul 25 '21 at 09:00

Write chemical equation with square arrow?

0 Answers0