How can one define the bond length for a ring system in chemfig? **6(-[,0.5]-[,0.5]-[,0.5]-[,0.5]-[,0.5]-[,0.5]) does not work, sadly.


The answer provided resizes the ring system, but not the circle within it, on my system. Here's my configuration:

\usepackage[landscape, top=0.3cm, left=0.1cm, right=0.3cm, bottom=0.3cm]{geometry}                % See geometry.pdf to learn the layout options. There are lots.
\geometry{letterpaper}                   % ... or a4paper or a5paper or ... 
\usepackage{chemfig, chemmacros}
\DeclareGraphicsRule{.tif}{png}{.png}{`convert #1 `dirname #1`/`basename #1 .tif`.png}

  • Do you only want a smaller benzene or is the smaller benzene part of a larger molecule where the rest has it's original size?
    – cgnieder
    Commented Nov 25, 2012 at 19:12
  • I want a smaller one. I'm looking to insert molecules inline with text.
    – CHM
    Commented Nov 25, 2012 at 19:21
  • Please, if you use mhchem for your chemical formulas and also use chemmacros load the latter with \usepackage[method=mhchem]{chemmacros}.
    – cgnieder
    Commented May 7, 2013 at 9:34

1 Answer 1


You can set the bond length at the begining of the ring:


gives a ring with half lengthed bonds.

EDIT: this work also with **n syntax. For example

\chemfig{A-**6([,0.5]------)} \chemfig{A-**6(------)}


enter image description here

  • Oh nice. But then the circle doesn't change size :/ I'm using the **n syntax.
    – CHM
    Commented Nov 25, 2012 at 19:34
  • It also work with **n syntax (see edit in my previous post)
    – unbonpetit
    Commented Nov 25, 2012 at 20:12
  • Hmm.. It doesn't work in my case. Weird!
    – CHM
    Commented Nov 25, 2012 at 20:22
  • Why don't you post a mwe?
    – unbonpetit
    Commented Nov 25, 2012 at 20:24
  • 1
    A mwe is a Minimal Working Example. Your preamble is not the most important here.Just post the code of your molecule (which does not work). But before that, check you have the latest version of chemfig.
    – unbonpetit
    Commented Nov 25, 2012 at 20:57

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