I want to draw a simple structural chemical formula with the chemfig package in Latex.

It schould look like the output of the code below, but i don't think that this is the right way to write it because the whole figure should be one formula with a plus in the middle and not two.

\chemfig{CH_4} + \chemfig{C([3]-H)([5]-H)=C([1]-H)([7]-H)}

How it should look like:

  • 1
    \schemestart \chemfig{...} \+ \chemfig{...} \schemestop is the way described in the manual
    – cgnieder
    Apr 12, 2017 at 8:46
  • exactly what i wanted, i didn't know that there is a plus sign in the scheme environment Apr 12, 2017 at 9:03
  • See part IV section 12 of the current chemfig manual :)
    – cgnieder
    Apr 12, 2017 at 9:34

1 Answer 1


is the way described in the manual:

The use of a “\+” macro that displays a + sign is available between the commands \schemestart and \schemestop.

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