答案1
对于反应方案,必须使用\schemstart \schemestop
对于聚合物,请参阅 ChemFig 手册第 12.4 节
\documentclass{article}
\usepackage{graphicx}
\usepackage{chemfig}
\begin{document}
\schemestart
\chemfig{*6(-=-=(-CH=[::-90]CH_2)-=)}
\arrow{->[$h\nu$]}[,1.5]
\chemfig{-[@{upleft,.2}]-CH(-[6,,1]*6(=-=-=-))(-[4])-[0]CH_2-[0]CH(-[6,,1]*6(=-=-=-))-[0]-[@{upright,0.2}]}
\polymerdelim[delimiters ={[]}, height = 10pt, depth = 100pt, indice = n]{upleft}{upright}
\schemestop
\end{document}