我想在chemmacros的reactions环境中（也与其他反应方案一起）包含一个反应图片（png/pdf），以便跟上其余反应的数字。假设光栅/矢量图像是必要的，我不能用chemfig它tikz来绘制它。
当我运行以下 MWE 时
\documentclass{article}
\usepackage{graphicx}
\graphicspath{ {graphics/} }
\usepackage{chemmacros}
\chemsetup{modules=all}
\begin{document}
\begin{reactions}
2 H2O <=>[ $K_\mathrm{eq}$ ] H3O+ + OH-
\includegraphics[width=0.8\linewidth]{Diels-Alder_rxn}
\end{reactions}
\end{document}
我收到大量错误消息：
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: File `Diels\chemformula_single_bond: Alder\chemformula_subscript:n rxn' not found. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: File `Diels\chemformula_single_bond: Alder\chemformula_subscript:n rxn' not found. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Missing \endcsname inserted. \end
line 14: Missing number, treated as zero. \end
line 14: Illegal unit of measure (pt inserted). \end
line 14: Extra \endcsname. \end
line 14: Overfull \hbox (4692.08719pt too wide) in paragraph
reaction那么将图形对象纳入/reactions环境并进行相应编号的正确方法是什么？
下面是我期望在编译时看到的一个小例子：
答案1
chemmacros默认情况下用于chemformula反应。如果chemformula数字（此处0.8）出现在非空格标记之间的某个位置，则将其视为化合物的下标。但它为用户提供了一种转义机制："..."。此外，您缺少\\：
\documentclass{article}
\usepackage{graphicx}
\graphicspath{ {graphics/} }
\usepackage{chemmacros}
\chemsetup{modules=all}
\begin{document}
\begin{reactions}
2 H2O <=>[ $K_\mathrm{eq}$ ] H3O+ + OH- \\
"\includegraphics[width=0.8\linewidth]{Diels-Alder_rxn}"
\end{reactions}
\end{document}