Questions tagged [chemistry]

{chemistry} is about typesetting chemical content.

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Center reaction with chemfig: subscript causes shifting

As can be seen, the second molecule of the reagents is not aligned with the first, probably due to the presence of the methane subscript 4. I tried this solution, but it doesn't work. Any idea? \...
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2 votes
2 answers
66 views

Center-align stacked molecules with chemfig

At right, the vertical arrow from ethylene to M is a coordination bond. Is it possible to centrally align the two molecules (ethylene and the solid catalyst surface), aligning their centers with the ...
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1 answer
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Smooth curve with tikz

This graph shows the effect of catalysts on activation energy \documentclass[12pt]{article} \usepackage[T1]{fontenc} \usepackage{lmodern} \usepackage[full]{textcomp} \usepackage[greek,italian]{babel} \...
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1 vote
2 answers
79 views

Formatting chemistry reaction

This is a draft of the reaction I would like to draw \documentclass[12pt]{article} \usepackage[T1]{fontenc} \usepackage{lmodern} \usepackage[full]{textcomp} \usepackage[greek,italian]{babel} \...
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4 answers
400 views

Is there a way to write a parallel chemical reaction like this one?

Im using the package chemformula, but I can't find a way to write something like this:
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1 answer
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Is it possible to write organic chemical substance in inline math mode?

Is it possible to write organic chemical substance in inline math mode? For example:
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1 vote
1 answer
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Spacing within Chemical equations [duplicate]

My Chemistry equations come out looking a bit awkward when it comes to writing compounds, which require multiple letters. Here's an example, note the space between H and N, or B and F: I couldn't ...
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1 answer
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horizontally figures with poor resolution and restricted to size

I want to add two photos horizontally, this works with my commands but I am restricted to width=0.45 for each (probably because of my margins) the problem is that the photos with this size are not ...
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3 votes
2 answers
125 views

Putting chemfig reactions in a circle

A while back, I had a teacher that gave us organic chemistry reaction summaries e.g. suppose the topic was benzene, the summary looked like this: I was wondering if this would be possible to ...
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3 votes
2 answers
180 views

Fractions in chemical equations not working

I am trying to type a Boyles equation into my latex report and everything looks fine. This is how I usually code my equations: \begin{gather} n_{CH_4}=\frac{COD}{64\frac{g}{mol}} \intertext{Where:} ...
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4 votes
2 answers
49 views

overfull \hbox when writing chemical formulas in the paragraph

I am writing a paragraph that includes chemical formulas using mhchem package. The problem is that I get overfull lines. Here is an example with my packages: \documentclass[14 pt]{extarticle} \...
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3 votes
1 answer
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SIunitx and non-integer exponents

I'm going through a number of old documents where I used siunitx to display numbers in scientific notation with non-integer exponents, like: \documentclass{article} \usepackage{siunitx} \begin{...
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2 votes
2 answers
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Chemfig Adjacent Atom Help

I am struggling with placing an H right beside my O. I don't want any dash between the O and H; just them beside each other. Here is a photo of what I want: Here is a photo of what I attempted: Here ...
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3 answers
132 views

How do you write H2O in LaTeX [duplicate]

Sorry if this is a stupid question, but I'm new in LaTeX, and have never used it for chemistry, just math. How do you write water, H2O, in LaTeX? Thanks in advance.
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1 vote
2 answers
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Chemfig: aligning multiple equations

I am trying to visualize the reaction to obtain fat. I want to align each of fatty acids on top of each other, without a connection. How can I stack them without a connection? I have tried using \...
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0 answers
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Citing with ACS style [duplicate]

Can anyone please help me to cite with ACS style because whatever the command I use it doesn't work, I always get either a question mark or just the name of the reference in bold so please if anyone ...
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1 vote
1 answer
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Units of solubility in water?

I am trying to write the units for solubility of a chemical substance (\ce{KNO_3}) in 100g of water. Currently, I am using: \SI{}{\gram / 100 \gram \ce{H_2O}} or \SI{}{\gram / 100 \gram of water} ...
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1 answer
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Justify long words

How can I justify text like this by for example automatic hyphenation? (which does not affect the rest of the text? If I use \linebreak it will go to the next line but not justify the prior text. I ...
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3 votes
2 answers
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Chemfig is drawing out of the box, on my text

I'm trying to make a figure to show hydrogen bounds. But the figure, draw using chemfig and tikz, but the figure overlaps the surrounding text. Here is my MWE: \documentclass{article} \usepackage{...
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3 answers
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Question about position of charges

I would like to have this compound but I want the \oplus on the left of the oxygen and also the bond is directly bond to the oxygen. I would like to use \chemleft, but it come out with many errors. ...
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2 answers
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vertical arrow in chemistry mechanism

I have decided to mark down the mechanism that I have learnt. However, I have got some problem. I would like to use a vertical arrow on the second step but I do not know any command that can form a ...
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0 votes
1 answer
101 views

How to draw the following Bohr's Atomic Model in LaTeX?

I'm a new user in LaTeX. I want to draw Bohr's Atomic Models like the following picture. Can someone please help me?
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-2 votes
1 answer
85 views

How to draw a tetrahedral of white phosphorus [closed]

I would like to draw a white phosphorus in my note but I cannot figure it out even with the manual. Could you please help me? Thank you very much.
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1 vote
1 answer
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Lewis structure with 5 atoms

I need to obtain something similar to this: This looks like a Lewis structure, so pairs of small x-es should rather be double dots. My attempt: \documentclass{article} \usepackage{chemfig} \begin{...
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3 votes
2 answers
160 views

Completing Chemfig Scheme

I'm currently writing a lab report using LaTeX and I'm tasked with rewriting one of the chemical reactions (in this instance isoborneol to camphor, reaction provided in pic). I have the basic ...
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46 votes
7 answers
3k views

Is there any reason to prefer a unicode symbol versus its LaTeX command counterpart?

For example, consider the Swedish letter "Å" which is also the symbol for a unit of length in chemistry. When writing a document, there are three different ways to achieve this character: Å ...
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0 votes
1 answer
76 views

Writing Chemical Reactions - Lewis Structure

How are you? I'm having a hard time doing this chemical reaction with a Lewis structure, could someone help me? Thank you very much!
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3 votes
2 answers
389 views

Box and arrow notation of writing electron configuration

image source: https://opentextbc.ca/ I write the electron configurations like 1s2 2s2 2p6, but not able to draw the box and arrow notations. $\mathrm{N} \quad 1 s^{2} 2 \mathrm{~s}^{2} 2 p^{3} \quad$ $...
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5 votes
3 answers
525 views

Which package should I use for chemical formula Na₂Mn₃(SO₄)₄? [duplicate]

I exported a BibTeX file from the journal's website, and in the title, there was a chemical formula written like this Na<inf>2</inf>Mn<inf>3</inf>(SO<inf>4</inf>)&...
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0 votes
1 answer
159 views

Triple bond in Chemfig

I have built the following resonance structures, but I would like to represent bonded electrons with dots and not dashes. In the case of a double bond I can use \: and get something like X::Y, but in ...
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0 votes
2 answers
93 views

Ignorant Chemistry question

I would like a double harpoon arrow representing a reversible reaction having a forward operator k1 above the harpoon, and a reverse operator k-1 below the harpoon. But \overset{k_1}\underset{k_-1}{\...
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1 vote
1 answer
71 views

Problems with chemical molecules in subfigures

I am trying to arrange a subfigure like 1 big on the left, one in the upper right and 4 left below. The figures are framed with a custom tcolorbox. All of my subfigures worked so far but for some ...
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Write chemical equation with square arrow?

I asked this question previously but when I used \polyglossia package code does not give me the same result, If any one can help. \documentclass{article} \usepackage{chemfig} \usepackage{fontspec} \...
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2 votes
1 answer
91 views

How to draw bonds between departure and arrival atoms correctly in chemfig?

I tried to draw hydantoin's structure with the code like this: \documentclass{report} \usepackage[utf8]{inputenc} \usepackage{chemfig} \def\Hv@scale{0.65} \makeatother \DeclareMathAlphabet{\foo}{OT1}{...
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0 votes
4 answers
211 views

How can I write this chemical equation?

How can I write this chemical equation, especially the arrows? \documentclass{article} \usepackage[utf8]{inputenc} \usepackage{chemfig} \begin{document} \schemestart \chemfig{CH_3CH_2CH_2CH_2-OH} ...
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1 vote
1 answer
97 views

How do I make a chemical equation with structural formulas, arrow and catalyst on the same row?

I tried this: \begin{tabular*}{\textwidth}{@{}l@{\extracolsep{\fill}}r@{}} \includegraphics[width=0.35]{images/1,3-dimethyluracil.png} & \ce{HNO_3} \newline \Longrightarrow & \...
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2 votes
2 answers
176 views

can I write this configuration for valence bond theory in latex?

It would be really helpful if someone could tell me how to write this electronic configuration in LaTeX.
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2 votes
0 answers
65 views

Unexpected output when using chemfig package in Latex

I'd like to write a reaction mechanics in Latex, but the output differs from what I expected. \documentclass{jlreq} \usepackage[dvipdfmx]{graphicx} \usepackage{chemfig} \usetikzlibrary{calc} \begin{...
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0 votes
1 answer
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How can I draw basic lewis structures with chemfig, and is there any recommended documentation to follow?

How would I reproduce something like this in chemfig, and is there any documentation I should follow? I understand this question has been asked multiple times, but I haven't found any post that goes ...
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1 vote
2 answers
113 views

Bring one atom to the front of a chemfig

I am trying to draw a 3D model of cyclohexane with some substituents. I am using the following code to draw my molecule. \documentclass{article} \usepackage{chemfig} \begin{document} \chemfig[bond ...
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Fixing automatic scheme numbering

I want to use either the chemscheme or chemnum package to automatically label my compounds in my document. Both of these function via the .eps format which is a problem when using pdfLaTeX, the ...
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1 vote
1 answer
118 views

Draw Chemical reactors

I was wondering if there is a package or some way of drawing chemical reactors as in the following image I was looking in the documentation of chemfig, streetex and xymtex but the closest one was to ...
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0 votes
1 answer
67 views

Molecular orbital diagrams for cojugated pi systems

I'm writing a paper about pericyclic reactions and I haven't found a good way to represent the energy levels of molecular orbitals of conjugated pi bonds. I've tried using the modiagram package, but ...
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0 votes
2 answers
259 views

Chemical equation does not fit

Is there any possibility to get my chemical equation on the same line of the page? The water should be on the right side of the equation. It would also look nicer with the structural formula "...
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1 vote
1 answer
43 views

Modifying the appearance of ghsystem's hazard and precautionary statements

The ghsystem package allows to generate hazard and precautionary statements as defined by the CLP Regulation of the EU. \documentclass[a4paper,12pt]{article} \usepackage{ghsystem} \begin{document} \...
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  • 397
5 votes
3 answers
362 views

Misaligned numbers in aromatic ring

I try to number atoms in an aromate using a code of the chemfig manual on page 30. As seen in the picture the blue number 5 does not align with the other numbers. Any ideas why H in NH misaligns my ...
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  • 6,230
3 votes
3 answers
758 views

What is this capital-beta-shaped symbol in LaTeX?

I'm looking for a symbol from this equation (for buffer capacity of solution): It looks like a capital beta to me or a capital Eszett letter from the German alphabet. However, to my knowledge, the ...
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4 votes
1 answer
98 views

Chemformula: The negative charges are barely visible

While writing a chemistry document I've noticed that the negative charges in chemformula are barely visible. I've included my whole preambule just in case there's a problem between packages: \...
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1 vote
1 answer
73 views

Chemfig - distance between arrow and Compound

I would like to increase the distance between the arrow of the reaction and the compounds but when I change the value of arrow offset the direction of the arrow gets inverted. Also, when I change the ...
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4 votes
1 answer
70 views

Problems with shifted double bonds in chemfig

The next code produces the molecule shown in the picture: \documentclass{article} \usepackage{chemfig} \begin{document} \chemfig[bond join=true,atom sep=2em]{\charge{[extra sep=4.5pt]0=\.}{}(-[4]*6(=-...
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