Math & Science ⇒ Arrow for multiple consecutive reactions
Arrow for multiple consecutive reactions
Hi!
There's a possibility to get an arrow like on the attached graphic?
Sonntag
There's a possibility to get an arrow like on the attached graphic?
Sonntag
- Attachments
-
- arrow.png (491 Bytes) Viewed 6781 times
NEW: TikZ book now 40% off at Amazon.com for a short time.

- Johannes_B
- Site Moderator
- Posts: 4182
- Joined: Thu Nov 01, 2012 4:08 pm
Re: Arrow for multiple consecutive reactions
TikZ; used by chemmacros, chemexec and mhchem; has an own arrow-library. It is likely that this kind of arrow is included. Unfortunately, the documentation is quite big and intimidating and always slowing down my machine to an almost standstill.
The smart way: Calm down and take a deep breath, read posts and provided links attentively, try to understand and ask if necessary.
Re: Arrow for multiple consecutive reactions
Thank you! Went through them but couldn't find any arrow like that yet.
- Johannes_B
- Site Moderator
- Posts: 4182
- Joined: Thu Nov 01, 2012 4:08 pm
Re: Arrow for multiple consecutive reactions
In your picture are two very simple arrows. Or are you referring to the unit of both as an arrow?
Can you give examples and references where this is used? If this is a sensible issue, i am sure Clemens will add this to chemformula.
Can you give examples and references where this is used? If this is a sensible issue, i am sure Clemens will add this to chemformula.
The smart way: Calm down and take a deep breath, read posts and provided links attentively, try to understand and ask if necessary.
Re: Arrow for multiple consecutive reactions
I refer to the unit.
It is an abbreviation that you use if you skip reaction steps to get to the written products (outgoing from the written educts.)
It is an abbreviation that you use if you skip reaction steps to get to the written products (outgoing from the written educts.)
- Johannes_B
- Site Moderator
- Posts: 4182
- Joined: Thu Nov 01, 2012 4:08 pm
Arrow for multiple consecutive reactions
Please add some references where this is actually used. I am not a chemist, i have seen this here for the first time. In order to make a feature request, we need some backup.
Since my Tikz-foo is very very limited, i could only come up with the following.
Since my Tikz-foo is very very limited, i could only come up with the following.
Code: Select all
\listfiles
\documentclass{article}
\usepackage{chemmacros}
\ExplSyntaxOn
\NewChemArrow { =>>> }
{
\draw[chemarrow,-cf]
([yshift=.15ex]cf_arrow_start) -- ([yshift=.15ex]cf_arrow_end) ;
\draw[chemarrow,-cf]
([yshift=-.35ex,xshift=.7em]cf_arrow_start) -- ([yshift=-.35ex,xshift=.7em]cf_arrow_end) ;
}
\ExplSyntaxOff
\begin{document}
\begin{reaction}
a =>>> D
\end{reaction}
\end{document}
The smart way: Calm down and take a deep breath, read posts and provided links attentively, try to understand and ask if necessary.
Arrow for multiple consecutive reactions
chemformula and its
There is no need for
Personally I'd set the arrows a little bit closer to each other but that is probably a matter of personal taste…
\NewChemArrow
is the right choice here, IMHO. I am reluctant to add this arrow to chemformula but the command \NewChemArrow
is provided for exactly such purposes.There is no need for
\ExplSyntaxOn
in order to use it, by the way.Personally I'd set the arrows a little bit closer to each other but that is probably a matter of personal taste…
Code: Select all
\documentclass{article}
\usepackage{chemformula}
\NewChemArrow{>>}{
\draw[chemarrow,-cf]
([yshift=.2ex]cf_arrow_start) -- ([yshift=.2ex]cf_arrow_end) ;
\draw[chemarrow,-cf,]
([yshift=-.2ex,xshift=.3em]cf_arrow_start) -- ([yshift=-.2ex,xshift=.3em]cf_arrow_end) ;
}
\begin{document}
\ch{A >> B >>[above][below] C}
\end{document}
site moderator & package author
Re: Arrow for multiple consecutive reactions
Thank you!