Koehn group (theoretical chemistry)
@koehngroup.bsky.social
140 followers 190 following 12 posts
Andreas Köhn's research group at the University of Stuttgart develops quantum chemical methods (in particular in coupled-cluster theory) and investigates open-shell systems; we also love scientific visualization in augmented reality
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koehngroup.bsky.social
Big thanks to the @pccp.rsc.org Editorial Board for selecting our recent article on spin-orbit coupling in multireference coupled-cluster theory (doi.org/10.1039/D5CP...) for the 2025 HOT PCCP articles list. We appreciate the distinction.
koehngroup.bsky.social
@unistuttgart.bsky.social is presented at WATOC2025 in Oslo by @johanneskaestner.bsky.social group, Benjamin Stamm's group, Guntram Rauhut's group, and us. A very enjoyable meeting!
A group picture of (nearly) all University of Stuttgart participants.
koehngroup.bsky.social
We have now released Version 1.1.1 of chARpack (chemistry in Augmented Reality package). This includes precompiled binaries for Windows (Server App), Android (Client App on Quest 3), or Universal Windows (Client App on Hololens 2). Find it on github.com/KoehnLab/chA... and have some real 3D fun!
Scene showcasing the program package: An interactive hologram representation of a molecule in front of a computer screen.
koehngroup.bsky.social
Now online (and open access): Our (personal) perspective on multireference coupled-cluster theory (with Robert Adam and Alex Waigum): See doi.org/10.1002/wcms...
The graphical abstract published with that work. It shows the coupled-cluster exponential ansatz sailing from "the safe shores of single reference theory" to the "promised land of high-accuracy multireference theory" (the "cliffs of complexity" still to be by-passed). Maybe a bit silly, but we had to draw something :)
koehngroup.bsky.social
Tobias Rau has now presented his paper #CHI2025 and also received the paper award. If you look closely at the picture you see that also molecules are involved. Nice collaboration with @tisenberg.bsky.social and Michael Sedlmair and Benjamin Lee from VISUS @unistuttgart.bsky.social. Well done Tobias!
Picture showing Tobias during his presentation at the CHI2025. The title slide is shown in the background: "Traversing Dual Realities: Investigating Techniques for Transitioning 3D Objects between Desktop and Augmented Reality Environments". There is also a picture on the title slide showing a user who "pulls" a molecule "out of the screen" into a 3D hologram representation. (That's the connection to chemistry, if you wonder.)
koehngroup.bsky.social
Now online in Advanced Optical Materials: Nice work of the group of A. J. C. Kuehne (Ulm), in collaboration with @deschlerlab.bsky.social, A. Gross and our group (featuring Robert Toews). A new twist on radical emitters, so to say 🙂. Check it out at doi.org/10.1002/adom... @unistuttgart.bsky.social
Table of contents graphic showing the relevant chemical structures of donor substituted trityl radicals. Additional Chlorine substituents at the trityl site increase the donor-acceptor angle and lead to larger quantum yields (increase from 4-27% to 16-59%).
koehngroup.bsky.social
... and after Easter, Tobias Rau from our group will fly to Japan to present the newest outcome from our collaboration:
tisenberg.bsky.social
Tobias Rau will soon present our paper (with A. Koehn, M. Sedlmair, B. Lee; best paper award) "Traversing Dual Realities: Investigating Techniques for Transitioning Digital Objects between Desktop and Augmented Reality Environments" at @chi.acm.org in Japan: tobias.isenberg.cc/VideosAndDem...
Tobias Isenberg - Traversing Dual Realities: Investigating Techniques for Transitioning Digital Objects between Desktop and Augmented Reality Environments
tobias.isenberg.cc
koehngroup.bsky.social
There are some updates from our collaboration with @tisenberg.bsky.social and the team at VISUS @unistuttgart.bsky.social. This is a slightly older post by Tobias on a collaborative learning evironment based on our chARpack software, see also charpack.github.io
tisenberg.bsky.social
Our paper on "Understanding Collaborative Learning of Molecular Structures in AR with Eye Tracking" (with T. Rau, M. Koch, N. Pathmanathan, D. Weiskopf, M. Sedlmair, A. Köhn, K. Kurzhals) was recently published in IEEE CG&A. More info: tobias.isenberg.cc/VideosAndDem...
Tobias Isenberg - Understanding Collaborative Learning of Molecular Structures in AR with Eye Tracking
tobias.isenberg.cc
Reposted by Koehn group (theoretical chemistry)
agtheochem.bsky.social
The AgTC (Arbeitsgemeinschaft Theoretische Chemie) is joining the blue sky. We will post about theoretical and computational chemistry-related topics.
To find out more about us, visit agtc.univie.ac.at
#AgTC #TheoChem #CompChem
ARBEITSGEMEINSCHAFT  THEORETISCHE  CHEMIE
agtc.univie.ac.at
Reposted by Koehn group (theoretical chemistry)
koehngroup.bsky.social
Today's group seminar program: Classical mechanics (practical exercise 🙂)
A happy group at the bowling center
koehngroup.bsky.social
Our new paper on multireference CC/CEPA hybrids is now out: doi.org/10.1002/jcc....
Reposted by Koehn group (theoretical chemistry)
amreibahr.bsky.social
Starkes Signal!!

Über 60 dt. Hochschulen & Forschungsinstitutionen haben heute ihren Ausstieg bei X bekanntgegeben, s.u. #eXit

X sei nicht mehr vereinbar mit ihren Grundwerten: „Weltoffenheit, wissenschaftliche Integrität, Transparenz und demokratischer Diskurs.“

Liste der Beteiligten hier:
Hochschulen und Forschungsinstitutionen verlassen Plattform X - Gemeinsam für Vielfalt, Freiheit und Wissenschaft
nachrichten.idw-online.de
Reposted by Koehn group (theoretical chemistry)
johanneskaestner.bsky.social
Thrilled to host @jwestermayr.bsky.social from uni Leipzig
for a talk at our institute today! We look forward to intensive discussions.
Reposted by Koehn group (theoretical chemistry)
sindlinger-lab.bsky.social
Hello chemical community here over where the skies are blue!
As our first post/tweet here, we would like to make you aware of the approaching closing date (6th Jan 25) for a professorship of coordination chemistry at our institute of inorganic chemistry in Stuttgart!
www.nature.com/naturecareer...
Professorship (W3) „Inorganic Coordination Chemistry" - Stuttgart, Baden-Württemberg (DE) job with Universität Stuttgart | 12832718
University of Stuttgart Faculty of Chemistry   Professorship (W3) „Inorganic Coordination Chemistry” Institute of Inorganic Chemistry | to be appoi...
www.nature.com
koehngroup.bsky.social
Happy New Year! We just created a new place to be here on this platform. More to come 🙂