# How to draw organometallic compounds?

I'm trying to draw this molecule using the chemfig package but honestly don't know where or how to start. Please help. Thank you.

\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}

• Welcome to TeX.SE, please show us what you have tried so-far. This is not a just-do-it-for-me site. – Raaja Apr 24 '19 at 20:31
• Since you are asking for a starting point, here are two; the chemfig manual and a google picture search for site:tex.stackexchange.com chemfig compounds. – user121799 Apr 24 '19 at 20:33
• The example on p. 68 of the chemfig user guide seems to contain all necessary components – user186389 Apr 24 '19 at 20:52
• Is that better? @Raaja – Dave124 Apr 25 '19 at 6:11
• You already got my +1 :) – Raaja Apr 25 '19 at 7:17

Try this:

\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}


The output:

• Thank you! That worked! – Dave124 Apr 25 '19 at 18:54