Questions tagged [chemfig]
{chemfig} is for questions pertaining to the use of the chemfig package for drawing 2D molecules and reaction schemes.
784
questions
2
votes
2
answers
32
views
How do I annotate a molecule on Chemfig?
I want to annotate a molecule like the image below
I have the following code for the molecule
\schemestart
\chemname{\chemfig[double bond sep = 4pt]{*5(((-[::180]*6(-=-=-=))(-[::-90]*6(-=-=-=)))-\...
- 227
2
votes
1
answer
65
views
Color nested bonds
In chemfig, I would like to represent the geometry of the complexes (in particular the fac/mer isomerism).
I can draw the complex: no problem.
However, I would like to better visualize the isomers by ...
- 1,537
2
votes
1
answer
41
views
LaTeX \chemfig{} structuring of Diisopropyl sulfate error
In LaTeX i'm attempting to create a chemical structure for Diisopropyl sulfate, it should look the image provided.
However, my chemical configuration looks like:
The code I used to try that is as ...
- 35
1
vote
1
answer
32
views
LaTeX Chemical \usepackage{chemfig} Clipping/Structural Issue
I have been writing a new LaTeX project that has to show chemical formula. When I enter in the code, the CHOSO_3 is clipping inside each other as shown:
Here is the basic code I have used:
\...
- 35
0
votes
1
answer
34
views
Inconsistency in labeling of chemistry figures when enumerated in two columns
As I think you can see, the benzene and anthracene labels are further away from the figure, while the rest, even the "testing" label on the second column. Could someone help me format this ...
0
votes
1
answer
51
views
Reducing the size of a reaction scheme
I want to write the reaction balance of a reaction, specifying the names of the molecules below: for this part, no problem. In my document, I would like to reduce the whole but I don't know what is ...
- 1,537
1
vote
1
answer
164
views
How to use chemfig package? [closed]
\documentclass{article}
\usepackage{chemfig}
\begin{document}
\chemfig∗6(−[:60](−[::−60]CH_3)−[:−60](−[::−60]CH_3)−[:−60]CH_3)
\end{document}
2
votes
1
answer
92
views
How to control arrowhead size in chemfig?
I read through the docs of chemfig, but it seems like there is no option to control the size of an arrowhead (except you define an arrow from scratch, what I can't do yet). The closest thing I have ...
- 547
0
votes
1
answer
62
views
Using two subschemes in a single compound messes up output
In a simple chemical reaction (A + B → C), I'm trying to draw 2 vertical arrows, one exactly below the letter "A" and one exactly below the letter "B". chemfig's documentation ...
- 105
1
vote
2
answers
158
views
How can draw the general structure of protein as in attached image?
\documentclass[border=2mm]{standalone}
\usepackage{chemfig}
\begin{document}
\schemestart
\chemfig{H_2N-C(-[2]R)(-[6]H)-C(=[2]O)-OH}
\+
\chemfig{H-N(-[2]H)-C(-[2]\charge{30:-1pt=$\prime$}{R})(-[6]H)-C(...
- 170
0
votes
2
answers
52
views
How to implement a multiline split when using chemmacros, chemformula & chemfig with LuaLaTeX
I've explored how to use \begin{split} and \begin{multline} to break the following long equation when using \ch. None have worked. I've assembled a not-so-short (apologies) MWE that will compile as is,...
- 653
1
vote
2
answers
59
views
chemfig: placing the starting atom at a coordinate in tikz
I have two molecules with the following code, but I want their first atoms to start at the same location. Any ideas?
\begin{tikzpicture}
\node (first) at (0, 0) {
\chemfig{-=-=}
};
\setchemfig{bond ...
- 41
3
votes
1
answer
45
views
Generate \charge arguments with a macro
I'm trying to use a macro to generate arguments that should be passed to \charge. I'm trying this:
\documentclass{minimal}
\usepackage{chemfig}
\begin{document}
\charge{-135:1pt=5}{C}
\...
- 425
3
votes
2
answers
135
views
Chemfig problem with bond to charge atom
I doing presentation in beamer (also I need to use LuaLatex, because of font), but I have a problem with one structure. Well I don't know what is wrong here, but a bond between ring and charge ...
0
votes
1
answer
50
views
How can I specify an arrow from a distant bond to another bond in chemfig
I have an issue regarding regarding using Chemfig to display an electron movement arrow from a distant bond to another. I have tried every possible arrangement of arguments but not found a solution. I ...
0
votes
1
answer
50
views
Making parentheses in the simplest way possible
I looked at some community posts asnwering how to use brackets in chemfig, but it was only for their specific case and looked very overcomplicated for what I´m trying to do.
Here is a picture of what ...
- 35
1
vote
1
answer
23
views
Locally increase the size of an arrow
I want to show a sequence of reactions (for chemists, Cannizzaro reaction) on the same line. In my case, I have to write a long molecule (Ph-CH=O) on the arrow but I have a problem in my code: either ...
- 1,537
2
votes
1
answer
57
views
Problem with delimiter using the chemfig package
This is my first post here, so please excuse me if I do anything wrong.
I have a problem using the \chemleft and \chemright commands. I use LuaLaTeX to compile. Whenever I try to compile the MWE given ...
- 23
0
votes
2
answers
39
views
Why is this error showing up when I run this section with a list in it?
I put a list in the section title of my document. Here is the code:
\documentclass{article}
\usepackage{enumerate}
\usepackage{chemfig}
\begin{document}
\section{My Controversial Opinions:
\begin{...
- 205
0
votes
1
answer
51
views
Problem with reaction mechanism in chemfig
Why these two arrows aren't in their places? First two chemmoves lines are in properly positions, and other two are something else and I can't find a problem in code. I compiled it few times.
Also I'd ...
0
votes
1
answer
38
views
Text above bonding and bond angle
Taking this pictures as example, how can I display r_1, r_2 and theta_1 in my 'ABC' molecule in a similar way?
\documentclass[12pt]{article}
\usepackage{chemfig}
\begin{document}
\begin{figure}...
- 1,577
2
votes
3
answers
73
views
Drawing multiple arrows to the same complex with chemfig
I'm currently trying to draw a chemical reaction network in latex using chemfig, however I have got stuck when drawing multiple arrows to the same complex within a linkage class. Here is my script so ...
- 21
1
vote
0
answers
64
views
How to get Anki working with TikZ-based packages in 2024?
I want to learn the LaTeX language to study chemistry with chemfig package and make Anki flashcards. The problem is that I am unable to make it work with Anki (normal LaTeX works fine)
I tried these ...
- 11
0
votes
1
answer
32
views
Chemfig error using charge macro: Argument of \charge_c has an extra }
the following code compiles for the first two chemfig macros but not for the third:
\documentclass{article}
\usepackage{chemfig}
\begin{document}
This works: \chemfig{H-C(-[2]H)(-[6]H)-C(-[2]H)(-...
- 25
0
votes
2
answers
83
views
Chemfig and TikZ
How can I make a chemical graph, with empty boxes, like this:
In chemfig + TikZ? Or there is some other way?
Somebody try something like this before?
3
votes
2
answers
268
views
Aesthetic of a chemical compound
I am drawing the following chemical compound
\chemfig[atom sep=24pt]{\textcolor{green}{CH_3}-C(-CH_2-CH_2?[a])(-[:-45,,1,1]CH_2-CH_2?[e])-[:45,,1,1]CH_2-CH_2-[:-45,,1,1]C?[a]?[e]-CH(-[:-45,,1,1]CH_2?[...
- 139
1
vote
1
answer
61
views
LuaLaTeX strange error with Noto CJK and babel onchar=ids fonts
I am converting a multilingual project to LuaLaTeX when it gave a strange error in a chemfig command:
! LaTeX Error: Command \rmfamily invalid in math mode.
See the LaTeX manual or LaTeX Companion ...
- 113
5
votes
2
answers
347
views
How can I curve the line around a molecule in chemfig and add a floating line?
So I want to make my chemical formulars in TikZ and I have this right now:
My problem is that I want to curve the yellow line below the molecule to make the text more visible and to not cut the ...
2
votes
1
answer
156
views
How to draw Benzo(k)fluoranthene with chemfig?
Target
Trial
I drew benzene rings one by one. To get the rightmost benzene rings aligned correctly, I used [:0]. I attempted to use a pair of hooks ? so that the two positions will be connected.
\...
4
votes
2
answers
604
views
Draw Saccharides
I would like to draw the following two pictures (source1, source2) using chemfig but I have no idea how to do it:
I can copy paste the example from the bottom of page 41 of the manual (and make ...
- 31.4k
0
votes
0
answers
46
views
`\polymerdelim` issue with `tikz-external` crash
Error when i have both tikz-external and a chemfig molecule
\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{external}
\tikzsetfigurename{figure_\arabic{part}.\arabic{section}.} % set ...
- 339
0
votes
2
answers
107
views
Chemical formula: Bond an atom to a bond between other atoms
How to draw this? im having trouble drawing the cycle as it must be connected by the bond,
also anyway to diminish the cycle bond size (atom sep) without having to add the sep to each bond?
\...
- 339
2
votes
3
answers
160
views
chemfig -- \charge writes into surrounding text
\documentclass{scrartcl}
\usepackage{chemfig}
\begin{document}
\par ggg jjj ggg jjj ggg jjj ggg jjj
\par
\schemestart
\chemfig{A-\charge{90:5pt=\textcolor{red}{+}}{B}-C}
\...
- 418
0
votes
2
answers
78
views
chemfig -- How to add horizontal space around an arrow?
Trying to add space around an arrow with \qquad leads to an asymmetrical result. This can be prevented with additional braces, but why are they needed?
1. The resulting image:
In the first line, the ...
- 418
2
votes
2
answers
143
views
Chemfig double bonds have inconsistant appearance
I have drawn the molecule meso-Tetraphenylporphyrin using the following Chemfig code:
\documentclass[12pt,twoside]{report}
\usepackage{chemfig}
\setchemfig{%
atom sep = 1.75em,
stack sep = 0....
- 35
3
votes
3
answers
186
views
Shift up a bond in ChemFig
In ChemFig, the "bond join=true" option does not work with "cram" bonds (see A, it is zoomed at join).
It is possible to increase the length of the bond with the "shorten"...
- 4,360
4
votes
3
answers
576
views
Drawing chemistry rings with charges on them
I'm new to using chemfig. I'm trying to create chemistry handouts and I want to draw the tropylium cation:
However I am unable to get the charge to come out of the ring. Any help would be appreciated....
- 43
1
vote
3
answers
185
views
Difficult Spiro Para-Hexagonal Ring?
How can I draw the following diagram in LaTeX?
this is code but it is different,
\begin{center}
\begin{tikzpicture}[scale=0.4,cap=round,>=latex]
\draw[thick,blue] (0,0) -- (2,1.5) (2,1.5) -- (...
- 31
0
votes
0
answers
62
views
From chemfig to .mol file
Yes, I know this package can generate structure from .mol and SMILES files. I'd like to know: is it possible to follow the reverse path, i.e. once the structure has been drawn with chemfig, generate ...
- 1,577
1
vote
1
answer
144
views
How to Draw Molecule
How do I draw the molecule Coronene, and place the ticks around the molecule with the letter H at the end of the ticks, using Tiks?
here is the code `
\section{Conclusão}
\begin{frame}
...
- 79
0
votes
0
answers
37
views
How to prevent placing chemfig pictures in tabularx producing error when attempting to externalize it?
I am attempting to put some chemfig diagrams into my tabularx. I have got the table appearing as I want it, however I just tried to externalize the tikz drawings to speed up compilation and I am ...
- 1
5
votes
3
answers
250
views
How to make a complex chemical diagram
I did everything possible to recreate this picture but I got stuck.
My best result is SOOO far from perfect.
\documentclass[border=1cm]{standalone}
\usepackage{chemfig}
\usepackage[utf8]{inputenc} %...
0
votes
1
answer
126
views
How to use `\polymerdelim`
\chemfig{N-[1]N-[7]N}\polymerdelim[delimiters ={[]}, height = 45pt, depth = 40pt, indice = n]{op}{cl}
May I know why it is not working? I am new to chemfig.
(Also I know that this is not a real ...
- 3
3
votes
2
answers
212
views
Adjustments to the Fe2(CO)9 structure design with Chemfig
I'm trying to draw the structure of Fe2(CO)9 using chemfig, but I'm not getting the bridging ligands of the structure quite right.
\documenteclass[]{article}
\usepackage{chemfig}
\begin{document}
\...
- 43
2
votes
1
answer
166
views
Drawing a hexagon structure similar to a Grötzsch graph with TikZ
I am trying to draw a hexagon that is connected to a set of vertices and edges within the borders of the hexagon itself. It is similar to a Grötzsch graph but is a hexagon rather than a pentagon.
So ...
user283535
0
votes
1
answer
70
views
use of chemfig package - conflict with graphicx package
I am using the following code, which works well:
\documentclass{scrbook}
\usepackage{chemfig}
\begin{document}
\section{Tetracene}
\vspace{2cm}
\chemname[2ex]{\chemfig{*6(1?-2-3*6(-4-5*6(-6-7*6(-8-...
- 23
0
votes
1
answer
75
views
How to draw double line one dashed?
\documentclass{article}
\usepackage{chemfig}
\begin{document}
\chemfig{Co(-[0,,1,,very thick,dotted]Cl)(-[1]NH_3)(-[2]Cl)(-[2,,1,,very thick,dotted])(-[3]H_3N)(-[4,,1,,very thick,dotted]Cl)(-[5]H_3N)(-...
- 170
1
vote
1
answer
29
views
Chemfig superscript and \llap
Does anyone have any idea how to avoid the overlap between the bond and the "12"?
Thanks!
\documentclass{article}
\usepackage{chemfig}
\begin{document}
\chemfig{H-{\llap{${}^{12}$}C}(-[2]...
- 13
1
vote
1
answer
166
views
How to make chemfig and xymtex chemical reaction equation look better?
I am trying to make my assignments look better. Here is the code and the current output:
\documentclass{article}
\usepackage[version=4,layout=stacked]{mhchem}
\usepackage{graphicx}
\usepackage{chemfig}...
- 63
2
votes
2
answers
175
views
Lewis structure with chemfig inside chemformula inside align?
Hi.
I am creating a beamer presentation on Lewis dot structures.
I got most of my code from this question (Draw Lewis structures like a book)... But then I got stuck with BH3...(3rd reaction). I am ...
