Nuno A. G. Bandeira
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nunobandeira.bsky.social
Nuno A. G. Bandeira
@nunobandeira.bsky.social
Computational chemist @ Ciências, ULisboa, Portugal
Pinned
The case of perferrate as a pathological example for conventional theory. Ready for submission soon...

doi.org/10.26434/che...
The FeO₄⁻ Puzzle: Extreme Oxidation State Pathologies and How to Address Them.
The perferrate anion [FeVIIO4]-, the elusive iron analogue of permanganate, has been extensively investigated, yet several questions remain unresolved concerning its structure and oxidation state. A p...
doi.org
The case of perferrate as a pathological example for conventional theory. Ready for submission soon...

doi.org/10.26434/che...
The FeO₄⁻ Puzzle: Extreme Oxidation State Pathologies and How to Address Them.
The perferrate anion [FeVIIO4]-, the elusive iron analogue of permanganate, has been extensively investigated, yet several questions remain unresolved concerning its structure and oxidation state. A p...
doi.org
November 5, 2025 at 10:43 AM
Axel Dieter Becke, one of the most prominent DFT pioneers, has passed away on October 23, aged 72.
October 27, 2025 at 9:50 AM
Finally the big reveal. A nice display of the deployment of state of the art quantum chemical methods if I do say so myself. Thanks to Joaquim Marçalo for letting it happen.

doi.org/10.1021/acs....
Experimental and Theoretical Study of the Formation of Noble Gas Monoxide Cations in the Gas Phase
Reactions of Ng+ ions (Ng = Kr, Xe) with strong oxidants O3 and N2O were examined by FTICR/MS, employing electron ionization in the ICR cell under very low pressure. For Kr+, only electron transfer wa...
doi.org
October 2, 2025 at 11:13 AM
Coming soon to your screens: basic science from Portugal.
September 25, 2025 at 10:26 AM
Oxygen reduction with heavy metals usually works in pairs of electrons. This time, unusually, we get a superoxide in between. My thanks to our colleagues in Graz who helped out. pubs.rsc.org/en/content/a...
DFT insights into the bifunctional nature of a bioinspired tungsten complex
Tungsten model complexes that replicate aspects of enzymatic activity are scarce due to challenges in reducing the readily prepared WO22+ moiety. As a result, studies of bioinspired catalytic cycles r...
pubs.rsc.org
August 12, 2025 at 5:06 PM
August 7, 2025 at 6:23 PM
What a cool sticker I got for my monitor. @orca-qc-official.bsky.social
July 30, 2025 at 12:40 PM
Alexander Sokolov wins the Dirac medal. #watoc2025
June 27, 2025 at 8:44 AM
Natural intelligence not machine learning. @grimmelab.bsky.social
June 26, 2025 at 10:12 AM
The well-deserved WATOC medal was given to Frank Neese. #watoc2025 @orca-qc-official.bsky.social @faccts.de
June 22, 2025 at 4:41 PM
June 22, 2025 at 1:35 PM
Prelude to a conference. #watoc2025
June 19, 2025 at 7:33 PM
Reposted by Nuno A. G. Bandeira
Missed the ORCA 6.1 release event? All talks are now online on our YouTube channel!

www.youtube.com/@faccts_orca

ORCA 6.1 Release Event Playlist:

www.youtube.com/watch?v=mRSk...

#ORCA61 #ORCAqc #FACCTs #MPIKOFO #CompChem #QuantumChem #ChemSky #CompChemSky
FACCTs
FACCTs is bringing the ORCA software to industry - promoting the next Quantum leaps in the Pharma, Materials and Chemical Industries.
www.youtube.com
June 18, 2025 at 3:49 PM
Reposted by Nuno A. G. Bandeira
For anyone who missed it:
Particularly interested in @lukaswittmann.bsky.social on DRACO and the new DeltaSCF capabilities.
#compchem
June 19, 2025 at 5:29 AM
Reposted by Nuno A. G. Bandeira
Here is the Zoom Link for the ORCA 6.1 Release Event - please share widely!

Hope to see many of you there!
June 13, 2025 at 9:41 AM
This will be the title of my poster to be presented at the next #WATOC2025 at the Oslo Kongressenter. Feel free to walk on by and say hello.
June 14, 2025 at 8:10 PM
Reposted by Nuno A. G. Bandeira
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/...
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.
wires.onlinelibrary.wiley.com
April 28, 2025 at 9:01 AM
Reposted by Nuno A. G. Bandeira
Quick follow up to the paper: here is GOAT doing a conformational search of a ligand on a protein pocket, including a few waters. The protein was frozen but does not need to be.

All done in ORCA6 using QM/MM for the PES.

Have fun with it! 😀 #compchemsky 🧪

onlinelibrary.wiley.com/doi/abs/10.1...
February 26, 2025 at 10:46 AM
#watoc2025 registration completed.
January 15, 2025 at 1:59 PM
It's finally out. Any chemical model worth a thing should be consistent with the rest in providing an answer. My thanks to Cina, Ángel & @faccts-orca.bsky.social

www.nature.com/articles/s41...
Reply to: An approach to the resolution of the dispute on collective atomic interactions - Nature Communications
Nature Communications - Reply to: An approach to the resolution of the dispute on collective atomic interactions
www.nature.com
November 30, 2024 at 3:51 PM
Reposted by Nuno A. G. Bandeira
I have predoctoral and postdoctoral fellowships for candidates with a strong background in computer modelling in condensed matter physics or computational chemistry/biochemistry.

Anybody interested contact me for details!
November 28, 2024 at 3:09 PM
Reposted by Nuno A. G. Bandeira
This week's #ChemSci Pick of the Week is "Performance of Quantum Chemistry Methods for Benchmark Set of Spin–State Energetics Derived from Experimental Data of 17 Transition Metal Complexes (SSE17)" by Mariusz Radon et al.

Read it here for free: doi.org/10.1039/D4SC...

#ChemSky #CompChemSky
Performance of quantum chemistry methods for a benchmark set of spin-state energetics derived from experimental data of 17 transition metal complexes (SSE17)
Accurate prediction of spin-state energetics for transition metal (TM) complexes is a compelling problem in applied quantum chemistry, with enormous implications for modeling catalytic reaction mechan...
doi.org
November 20, 2024 at 2:20 PM