如何绘制有机金属化合物？

Question

我正在尝试使用 chemfig 包绘制这个分子，但说实话不知道从哪里开始或如何开始。请帮忙。谢谢。

\documentclass{article}
\usepackage{chemfig}
\setcrambond{3pt}{}{}
\begin{document}

\chemfig{
  ?[a]>[:18,.8]-[:108,.8]-[4]
    (
      -[:-40,.65,,,draw=none]@{r1}-[2,,,,dotted]
      Fe
      -[2,,,,dotted]@{r2}-[:-130,.7,,,draw=none]
      ?[b]-[,,,,line width=3.5pt]>[:72,.8]-[:162,.8]-[:-162,.8]?[b,4]
    )
  -[:-108,.8]?[a,4]}
\chemmove{
  \draw (r1) ellipse (15pt and 8pt);
  \draw (r2) ellipse (15pt and 8pt);
}
\end{document}

Answer 1

尝试这个：

\documentclass{article}
\usepackage{chemfig}
\begin{document}
\setchemfig{cram width=4pt}
\chemfig{
    ?[start]<[::-30]>[::+60]?[start]% Bottom ring
    -[::120,,,,draw=none]% Invisible bond
    M(-[:-90,0.7,,,dashed,preaction={draw=white,line width=3pt}])% Dashed bond with white border
    (-[:90,0.7,,,dashed])% Invisible bond
    -[::0,,,,draw=none]?[end]<:[:+30]>:[::-60]?[end]% Upper ring
}
\end{document}

输出：