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Koehn group (theoretical chemistry)

@koehngroup.bsky.social
152 followers 194 following 15 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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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 18/06/2026
Thanks for the perfect collaboration. Looking forward to continue on this!
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 02/03/2026
Hurray, one more PhD! 😀 Congratulations to Julia!
Julia proudly wearing wearing the doctoral cap, fondly handcrafted by her colleagues (not those on the picture, that is the examination committee).
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 10/11/2025
A new PhD (actually a doctor rerum naturalis) is born! Congratulations, Patrik! 👨‍🎓🎉
The candidate (2nd from the right, still a bit exhausted) after the rigorosum, surrounded by the examiners.
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 01/07/2025
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.
doi.org
Treatment of spin–orbit coupling with internally contracted multireference coupled cluster theory
We present the formalism for computing state-interaction matrix elements within the multistate extension of internally contracted multireference coupled-cluster theory. In particular, we focus on the ...
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 26/06/2025
@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.
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 28/05/2025
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.
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 08/05/2025
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 :)
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 02/05/2025
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.)
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 23/04/2025
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%).
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 17/04/2025
... and after Easter, Tobias Rau from our group will fly to Japan to present the newest outcome from our collaboration:
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 17/04/2025
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
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Ida-Marie Høyvik @idamaho.bsky.social · 03/04/2025
I have an open PhD position on the development of coupled cluster models for electronically open molecules🌟 Please share! #ERCCoG www.jobbnorge.no/en/available...
jobbnorge.no
PhD Candidate in quantum chemistry (278574) | NTNU - Norwegian University of Science and Technology
Job title: PhD Candidate in quantum chemistry (278574), Employer: NTNU - Norwegian University of Science and Technology, Deadline: Sunday, April 27, 2025
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agtheochem.bsky.social @agtheochem.bsky.social · 17/03/2025
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
agtc.univie.ac.at
ARBEITSGEMEINSCHAFT  THEORETISCHE  CHEMIE
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Alessandro Lunghi @lunghiale.bsky.social · 13/03/2025
The Spin-Phonon Relaxation Mechanism of Single-Molecule Magnets in the Presence of Strong Exchange Coupling Out in ACS Central Science @acs.org In collaboration with @koehngroup.bsky.social @agvsl.bsky.social & Sarkar pubs.acs.org/doi/10.1021/...
pubs.acs.org
The Spin-Phonon Relaxation Mechanism of Single-Molecule Magnets in the Presence of Strong Exchange Coupling
Magnetic relaxation in coordination compounds is largely dominated by the interaction of the spin with phonons. Although a comprehensive understanding of spin-phonon relaxation has been achieved for m...
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Van Slageren Group @agvsl.bsky.social · 05/03/2025
David's, Julia's and Simon's excellent work on the electronic structure of a radical-bridged dinuclear single-molecule magnet has now been published in @naturecomms.bsky.social. rdcu.be/ecfil. Coll. @koehngroup.bsky.social and Biprajit Sarkar. @unistuttgart.bsky.social. @dfg.de. @mwk-bw.bsky.social
rdcu.be
Electronic structure of mononuclear and radical-bridged dinuclear cobalt(II) single-molecule magnets
Nature Communications - Four-coordinate cobalt(II) complexes possess high energy barriers toward inversion of the magnetic moment, but not the magnetic bistability needed for magnetic data storage....
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Reposted by Koehn group (theoretical chemistry)
4th European Conference on Molecular Spintronics @ecmols2025.bsky.social · 12/02/2025
The 4th European Conference on Molecular Spintronics is coming to Dublin this year! Join us from the 2nd to the 4th of June @tcddublin.bsky.social #TCDSchoolOfPhysics 🧲⚛️🖥️ Follow us for news or click on the webpage below to see the programme and travel info! www.linkedin.com/events/ecmol...
linkedin.com
ECMolS 2025 Conference | LinkedIn
This is the official LinkedIn event page of the 4th European Conference on Molecular Spintronics (ECMolS 2025) to be held from 2nd to 4th June, 2025 at Trinity College Dublin, Ireland. Following the ...
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Kasper S. Pedersen @kasperspedersen.bsky.social · 07/02/2025
👋Our department at the Technical University of Denmark is looking for an assistant/associate professor in *any* chemical discipline! 🧪🇩🇰 Check it out and feel free to get in touch 💬 👇 efzu.fa.em2.oraclecloud.com/hcmUI/Candid...
efzu.fa.em2.oraclecloud.com
Associate Professor or DTU Tenure Track Assistant Professor in Chemistry - DTU Chemistry
The Technical University of Denmark (DTU) offers the opportunity to build a research group in advanced and applied chemistry at an internationally esteemed department with an excellent infrastructure.
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 28/01/2025
Today's group seminar program: Classical mechanics (practical exercise 🙂)
A happy group at the bowling center
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 23/01/2025
Our new paper on multireference CC/CEPA hybrids is now out: doi.org/10.1002/jcc....
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Amrei Bahr @amreibahr.bsky.social · 10/01/2025
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:
nachrichten.idw-online.de
Hochschulen und Forschungsinstitutionen verlassen Plattform X - Gemeinsam für Vielfalt, Freiheit und Wissenschaft
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Johannes Kästner @johanneskaestner.bsky.social · 07/01/2025
Thrilled to host @jwestermayr.bsky.social from uni Leipzig for a talk at our institute today! We look forward to intensive discussions.
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Sindlinger Lab @sindlinger-lab.bsky.social · 02/01/2025
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...
nature.com
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...
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Koehn group (theoretical chemistry) @koehngroup.bsky.social · 01/01/2025
Happy New Year! We just created a new place to be here on this platform. More to come 🙂
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