A package for drawing 2D molecules using the TikZ package.

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LibreOffice + TeXmath on Using Chemfig

With the LaTeX example \documentclass{article} \usepackage{chemfig} \usetikzlibrary{arrows.meta} \tikzset{ elmove/.style={-{Stealth[#1]},shorten >=3pt,shorten <=2pt} } \begin{document} ...
3
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1answer
38 views

why bounding box dimensions are inherited from previous chemfig molecules in beamer?

I'm sure my problem is related to my OS but I can't tell why and how. Last year I was on Debian wheezy, while at present I'm on Mint Rebecca. I'm revising my slides for the lessons and, after ...
3
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2answers
67 views

How can I draw an ellipse in benzene molecule?

Can you help me to draw an dash ellipse in benzene molecule and adsorption bond from the molecule center to the metal? \documentclass{article} \usepackage[utf8]{inputenc} \usepackage{chemfig} ...
4
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1answer
39 views

Text and figure alignment in chemfig reaction scheme?

I am new to chemfig, and I am trying to illustrate a reaction using the code: \documentclass{article} \usepackage{chemfig} \begin{document} \schemestart \chemname ...
6
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2answers
121 views

Use of # in align block

I have a chemfig command which involves the use of #. It compiles properly on itself. \chemfig{**[135,405,dash pattern=on 2pt off ...
4
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1answer
64 views

Color functional groups in chemfig syntax

I want to color simple functional groups in organic molecules using the chemfig package. I've come up with a solution that achieves what I want (MWE), but I find it very cumbersome. I thought it could ...
3
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1answer
30 views

How to set departure atom with chemfig lewis macro?

I'm drawing a molecule and its radicals with chemfig. For the molecule, the bond departs from the C of CH_3, but in the radicals, the departing bond is centered. I tried splitting the \lewis structure ...
0
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1answer
47 views

Aligning Species of a Reaction Horizontally

how do you align the following horizontally: \begin{center} \schemestart \chembelow[3ex]{\chemfig{*6(=-=-(-[,.65]OH)=-)}} \chemsign{+} \chembelow[8ex]{\chemfig{CH_2O}}{Formaldehyde} \arrow{->} ...
2
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1answer
80 views

How to annotate chemfig drawing with circles and lines?

I want to draw circles on top of a chemfig molecule and then connect these circles with elements in a table above. I have gotten this far: \documentclass{memoir} \usepackage{tikz} ...
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1answer
83 views

Refers to a node on a chemfig inside a node in a tikzpicture. Macro definitions

Consider the minimal example: \documentclass[12pt]{article} \usepackage{tikz} ...
6
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1answer
159 views

How to draw NO2 in LaTeX?

It would be nice if you could help me to draw NO2 in LaTeX. The figure should look like the example image. On this website is some information about the chemfig/chemmakro package. My code untill now ...
2
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0answers
77 views

Using the mhchem and chemfig packages in conjunction

I am trying to write a chemical reaction in which I want to include a chemical structure. I am having some trouble regarding alignment and bond length. Here is a minimal working example: ...
2
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2answers
190 views

how to set a fixed interatomic distance in chemfig package?

Using - with the \chemfig command of the chemfig package, interatomic distance is automatically calculated and the link between atoms is drawn. But interatomic distance is set as the distance between ...
3
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1answer
96 views

Problem with tikz external library and chemfig - fatal error in external image

I have a document with a lot of diagrams created with PGFPlots and want to externalize those. All other tikz snippets should not get externalized. I achieve this by setting \tikzset{external/only ...
3
votes
1answer
88 views

amino acid — peptides chemfig

Inspired by this question chemfig and lego-style molecule construction, I decided to make a generic method of drawing peptides...that's a series of amino acids bonded together to the uninitiated. I ...
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2answers
141 views

Electron movement between compounds in reaction schemes

I tried to draw some reaction schemes with some electron movements using the chemfig macros. Problem is: I can draw every electron movement but in schemes only inside a certain compound of the ...
6
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2answers
102 views

How to make only one part of double bond bold with chemfig?

I'm trying to get this kind of appearance for chemical structure (see highlighted regions): By so far I could manage to do like this: This is my code: \documentclass[12pt]{standalone} ...
4
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1answer
45 views

chemfig Horizontal Aligment

I need to align some molecules according to this picture. 1st Point of alignment should be the beginning of the ring, 2nd point of alignment should be the 'N' on the right-hand chain. The bound to ...
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2answers
79 views

Aligning labels of chemical reaction

how do I do this: so far I have: \begin{center} \schemestart \chemfig{CH_3Cl} \chemsign{+} \chembelow[.25ex]{\chemfig{Si(Cu)}}{Silicon/CopperAlloy} \chemrel{->} ...
1
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1answer
59 views

How can I create multiple connections in a molecule using the chemfig usepackage?

Dear fellow Tex users, I would like to draw some complex molecules using the chemfig package and am facing a problem when wishing to make several independent connections between atoms in my molecule. ...
4
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1answer
71 views

Distance between arrow and reaction product

Please tell me, How I can reduce a distance between arrow and feed substances. I want the same distances at all three directions. To make it clearer, I explain: I drew the side substances as a massive ...
6
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1answer
71 views

Placing the Head of a Curved Arrow of a Reaction Mechanism Slightly Above the Plus Sign

My Code is: \documentclass[12pt,letterpaper]{report} \usepackage{blindtext} \usepackage[utf8]{inputenc} \usepackage{chemfig} \usepackage{tikz} \usetikzlibrary{arrows.meta} \tikzset{ ...
5
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1answer
108 views

font size in chemfig

I am using chemfig scaling and want to increase the font size, but not any other parameter of the molecule. So a MWE would be: \documentclass{article} \usepackge{chemfig} \begin{document} ...
3
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2answers
134 views

Labeling Species of a Chemical Reaction

My code is: \documentclass[12pt,letterpaper]{report} \usepackage{blindtext} \usepackage[utf8]{inputenc} \usepackage[margin=1in]{geometry} \usepackage{titlesec} \setcounter{secnumdepth}{5} ...
7
votes
1answer
190 views

How to use chemfig for chemical reaction with skeletal forms

My code is: \documentclass[12pt,letterpaper]{report} \usepackage{blindtext} \usepackage[utf8]{inputenc} \usepackage[margin=1in]{geometry} \usepackage{titlesec} \setcounter{secnumdepth}{5} ...
3
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2answers
114 views

chemfig chemname alignment in schemes

After careful consultation of the chemfig documentation and looking up a couple of questions here, I am struggling to find a solution to get these correctly aligned. They are inside a box which is ...
3
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2answers
162 views

chemfig: align multiple reactions

How can I align multiple reactions to the reaction arrow using chemfig? In the MWE, I want to align the two reactions to the arrow. \documentclass{minimal} \usepackage{chemfig} \begin{document} ...
5
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2answers
180 views

Drawing histidine with chemfig

I'm trying to draw histidine with chemfig and I'm stuck. I drew most parts correctly but I'm having trouble attaching the imidazole ring properly. Here's what I have so far: \documentclass{article} ...
2
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2answers
215 views

How I can write polymeric reaction in latex

Is it possible write this reaction in latex ? I used this code, but the "image" of raction is very big. How I can reduce it ? \documentclass[12pt,twoside,a4paper,openright]{report} ...
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0answers
48 views

I have a problem with the command \chemleft[ of chemfig [closed]

I have a problem with the command \chemleft[ of chemfig. Someone of you can help me please?
3
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4answers
170 views

Chemical structures drawing: {table} vs \chemfig

I write a chemical structure as a table. Please help me understand, How can I reduce the distances between the rows and columns in a table? This is the structure of the zeolite and would like to make ...
1
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2answers
146 views

chemical scheme not elegant

I want to make this chemical scheme: I try with this code. But not very elegant. Somebody can I help me ? \documentclass[12pt,twoside,a4paper,openright]{report} ...
2
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1answer
74 views

increase zorder in chemfig+tikz

I have a chemfig structure where I want to highlight certain positions by drawing a simple circle at the atom site. This works so far, but I would also like to have the new nodes on top of the ...
2
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1answer
76 views

Custom label for chemical structures

I need a custom label for my chemical structures and everything works fine but the label isn't centered. Does anyone know how to center the label? \documentclass{minimal} \usepackage{hyperref} ...
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169 views

Chemical Structural formula in math latex without package [closed]

I need to draw the chemical structures of carbon compounds like benzene, acetone. The problem I am having is that I am using script from ...
3
votes
1answer
396 views

How do I insert the double dagger symbol for transition state?

I'd like to use the double dagger symbol of the transition state after a squared parentheses in chemfig. Here it is what I've managed to do: \documentclass{article} \usepackage[italian]{babel} ...
4
votes
1answer
198 views

chemfig: reaction above arrow

I want to typeset a small reaction above a reaction arrow inside a scheme. Putting a \subscheme{} into the first of argument of \arrow unfortunately breaks the layout. Should I just try to position ...
5
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1answer
96 views

Error with newcommand and \def

Can anyone ples help with this problem: \documentclass[fontsize=12pt,paper=a4,headsepline]{scrartcl} \usepackage{chemfig,chemmacros} \def\nc{\arrow{0}[,0]} \begin{document} What it is: ...
2
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1answer
70 views

Name in chemfig: on rotation it is placed above, rather than below the molecule itself

please consider the following \documentclass{minimal} \usepackage{chemfig, xstring} \begin{document} \definesubmol{allicin}{% % 1 =[::90]S% 2 ( -[::60]% 3 ...
6
votes
1answer
200 views

Chemfig: length and angle of bonds

I've just tried using chemfig for the first time to try and recreate a figure (below). I had a quick look through the manual so see if there was an example that I could adapt to my needs, and this ...
0
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0answers
53 views

Saving Chemfig submolecules in a separate file, to be recovered into beamer

Please consider the following code \documentclass[t]{beamer} \usepackage{chemfig} \begin{document} \begin{frame} \frametitle{1st frame} \definesubmol{x}{-[:+30,.6]-[:-30,.6]} ...
3
votes
1answer
96 views

Problem with mesomeric effect in chemfig

I'm trying to draw mesomeric effect for a molecule using chemfig I would like to create something like this: From the documentation page (see chapter 11 "Representing electron movements")seems easy ...
4
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2answers
129 views

How to move bond position with chemfig package?

I'm using this code to generate chemical structure with chemfig package: \documentclass[12pt,a4paper]{standalone} \usepackage{chemfig} \begin{document} \setatomsep{2.5em} ...
0
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0answers
143 views

Numbering of equations in chemfig

This might be a stupid question, but how do I number my equations in chemfig? I've drawn this rather complicated equation in chemfig, but I have no idea how to number it. I was hoping to have it ...
5
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1answer
207 views

Chemfig - command arrow - alignment doesn't work

I'm writing my bachelor thesis. I wanted to insert a chemical equation, but the reactant and the product are not horizontally aligned well. I found in Chemfig manual a solution to this problem but ...
3
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1answer
151 views

In chemfig, grouping with \color ineffective, unlike \textcolor

Some strange behaviour which contradicts the documentation was encountered when creating a figure of 5-cafeoylquinic acid with chemfig. It is stated in the manual that The atoms are displayed in ...
1
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1answer
282 views

Draw molecule charge in latex using chemfig?

I've got a lewis dot structure diagram as seen in the following image: However, I would like to have brackets on the outside to indicate the positive charge, since this is supposed to represent H3O ...
12
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2answers
357 views

Ugly bond joints in chemfig

Making my first scientific poster I have noticed that Chemfig does not join bonds in a very aesthetic way (see attached image). How can I avoid the small gaps shown here, and make sure the transition ...
6
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2answers
334 views

How to draw counter-ions using chemfig package?

For my thesis I need to draw this: With this code I could get everything except for the counter-ion (shown with red arrow, I do not need the red arrow and the line on the figure). ...
5
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1answer
166 views

Ring as a submolecule

Is there a nice way to define a ring submolecule and then reuse it in a bigger molecule (maybe something similar to “chemfig and lego-style molecule construction”? (append one ring after another) I ...