Sebastian Kozuch Comp Chem 🎗️

When all the carbons are indistinguishable because they interconvert through 👻ℚ𝕦𝕒𝕟𝕥𝕦𝕞 𝕋𝕦𝕟𝕟𝕖𝕝𝕚𝕟𝕘👻
Meet my new friend, the Armilenyl cation:
doi.org/10.1021/acs....

🔥New and HOT in Chemical Science!

"Aromaticity switching by quantum tunnelling" by Sindy Julieth Rodríguez-Sotelo and Sebastian Kozuch et al.

Read it for free here: doi.org/10.1039/D5SC...

Part of our 15th anniversary Community Collection!
Read the full collection here: rsc.li/chemsci-commu...

A new type of chemical bond appears every month.
This month is my turn, sort of 😁
Who wants to meet the ℝ𝕖𝕤𝕠𝕟𝕒𝕟𝕥 𝔻𝕒𝕥𝕚𝕧𝕖 𝔹𝕠𝕟𝕕𝕤?
onlinelibrary.wiley.com/doi/10.1002/...

This Chemistry World is covering the work of @kozuchsebastian.bsky.social, published in Chemical Science.

You can read the full paper here:
doi.org/10.1039/D5SC...

#ChemSky

A pure cleavage should (theoretically) leave the two fragments entangled, AKAIK. However, the minimal interaction with a "bath" (usually other molecules) will make the system decohere, and that would be the end of the spooky story.

If you're suddenly interested in ℚ𝕦𝕒𝕟𝕥𝕦𝕞 𝕋𝕦𝕟𝕟𝕖𝕝𝕚𝕟𝕘, hear me out:
Do you know the famous dead/alive cat?🙀
With @aromaticist.bsky.social group we found a case where the tunneling in rings makes them Aromatic and Antiaromatic at the same time!⌬
doi.org/10.1039/D5SC...

We found (theoretically) another case of F tunnel!
Now, for the same price, including a fluorine halogen bond.
"Fluorine Ping-Pong Tunnelling in Cages"
New J. Chem. - Festschrift for Giuseppe Resnati
doi.org/10.1039/D5NJ...

"The chemical bond: The biggest chemical paradigm, or the greatest chemical uncertainty?"

Yay, my first philosophy of chemistry article in the Jargonium blog 🥳
www.jargonium.com/post/the-che...

We just submitted an article on aromaticity. I will not disrespect this field until the paper is accepted.

The fact that you have to ask explains everything. 😝

Yep. Same vibes.

ChemBond Network A Flourish data visualization by viejo

The chemical bond is a mess. So I tried to map it.
Now it is still a mess, but in a network.
public.flourish.studio/visualisatio...

This is a work in progress.
Let me know which bonds and connections I am missing.

How do you rebuild your lab after it is hit by an Iranian missile? Milko van der Boom talks to Chemistry World about dealing with destruction at the Weizmann Institute, saving samples and people coming together

Milko van der Boom – who served as as the head of several key chemistry departments before assuming his current leadership role in December 2024 – insists his chemistry department will rebuild after the destruction caused by Iranian missiles.
www.chemistryworld.com/news/how-do-...

Register to get info on WATOC 2028 in Merida!
docs.google.com/forms/d/e/1F...

Remember the old story of the non-classical norbornyl cation?🤔
It can also be classical, and it can react by Quantum Tunneling!🙀
And wait until you hear about the effect of putting it into an electric field...⚡️
pubs.acs.org/doi/10.1021/...
Proudly part of Phys Org Chem JOC Issue⚗️

doi.org/10.1039/D5CP...

A difficult morning here in Beer Sheva, but at least we have this beauty just published:
"How Small Can a Catenane Be, if We Consider Quantum Tunnelling?"

And it is part of the "Celebrating Latin American Chemistry"💪
pubs-rsc-org.bengurionu.idm.oclc.org/en/content/a...

FYI, Ben-Gurion University was only slightly shaken by the rocket falling in the neighboring Soroka Hospital. The chemistry building is fine. Some broken glasses in other buildings.

Sadly, and due to obvious circumstances, I will not be able to join you next week at WATOC in Oslo.🥲Have fun in my name.
I hope I will be able to see all of you next time in Mexico!
Let's try to bring peace and stability through science for everyone.

Preparation of a neutral nitrogen allotrope hexanitrogen C2h-N6  - Nature The facile synthesis and spectroscopic identification of previously unreported hexanitrogen C2h-N6 is described, representing experimentally realized neutral molecular nitrogen allotropes beyond N2 th...

And when we thought we already knew all possible small molecules, N6 suddenly appears🤯
One of the most beautiful papers of the 21st century was published yesterday.
www.nature.com/articles/s41...

Fluorine surprises by becoming heaviest atom ever to quantum tunnel First experimental evidence of tunnelling in fluorine pushes the boundary of our understanding of chemical bonding

Quantum tunnelling may be common at the tiniest scales, but no one had ever observed the phenomenon in fluorine - the element was simply thought to be too heavy. Now, this accepted wisdom has been upended in new experiments that observe fluorine tunnelling

www.chemistryworld.com/news/fluorin...

I gave a small lecture on history of chemistry. Some slides were interesting, and since I am waiting for some jobs to finish, here they are.

Celebrating the Birth Centenary of Quantum Mechanics: A Historical Perspective In July 1925, Werner Heisenberg submitted a paper to Zeitschrift für Physik entitled ‘On quantum-theoretical reinterpretation of kinematic and mechanical relationships’, thus giving birth to quantum m...

Celebrating the Birth Centenary of Quantum Mechanics: A Historical Perspective | Industrial & Engineering Chemistry Research pubs.acs.org/doi/10.1021/...

Someone just send me this brilliant question in an exam.
Would you be able to push this in your institution?

Did you know that the previous pope specialized in chemistry at high school?

Software Update: The ORCA Program System—Version 6.0 This article describes the philosophy behind- and new features in the ORCA quantum chemistry program suite, version 6.0.

Dear ORCA community,

it took a while, but now the ORCA 6.0 article is out! It serves as generic reference for ORCA 6.x. However, if you are serious about supporting our efforts, please take note of the suggested citations at the end of each ORCA run.

wires.onlinelibrary.wiley.com/doi/10.1002/...