Eduardo Garcia-Padilla

@garciapadilla.bsky.social

Chemistry thoughts coming out of the bell of a French horn. Postdoctoral Researcher in the Qiu Group, MPI für Kohlenforschung. PhD 2023 @ ICIQ Often found ∝ Ψ^2

Five years in the making, now finally published: Targeted synthesis of an inorganic sandwich complex. Congratulations to all co-authors and thanks to our collaborators: Eduardo García Padilla, Kai Schwedtmann, Demi Snabilie, Prof. Dr. Jan J. Weigand and Bas de Bruin! tinyurl.com/2v3xnwby

Inorganic Cobalt Sandwich Complex [(η5-P5)Co(η3-P3)]−

Sandwich compounds are foundational to organometallic chemistry, yet carbon-free analogs remain exceptionally rare. We report the all-phosphorus heteroleptic cobalt sandwich anion [(η5-P5)Co(η3-P3)]− ...

pubs.acs.org

Our last work is online in @InorgChem. We rationalize spin-crossover properties of substituted Fe (II) complexes pubs.acs.org/doi/10.1021/...

Rationalizing Spin-Crossover Properties of Substituted Fe (II) Complexes

We investigate spin-state transitions in a series of 24 [FeII(bppX)2]2+ spin-crossover (SCO) complexes using density functional theory (DFT). The TPSSh/def2-TZVP approach demonstrates reasonable accuracy in predicting spin-state energetics compared to other functionals, though significant deviations persist in transition temperature (T1/2) estimates. Temperature-dependent and quasi-harmonic corrections for low-frequency vibrational contributions to enthalpic and entropic terms yielded only marginal improvements. To improve T1/2 prediction accuracy, we develop electronic descriptors based on effective fragment orbitals (EFOs) and their occupations, quantifying ligand σ-donation and π-acceptor characteristics that govern ligand field strength. Additionally, we introduce a resonance descriptor (R) derived solely from the effective atomic orbitals (eff-AOs) of isolated ligands. Our analysis reveals that electron-donating groups (EDGs) enhance π-electron density in the ligands while simultaneously reducing both σ-donor and π-acceptor capabilities, ultimately lowering the T1/2 value. These descriptors perform reasonably well also for a set of 12 [FeII(pyboxX)2]2+ SCO complexes. This new methodology provides a computationally efficient framework for modulating spin-state properties in transition metal complexes, enabling rational design of SCO materials.

pubs.acs.org

There's an open position with Prof. Frank Neese, together with Prof. Stefan Grime to work on the next gen. of xTB in ORCA. Two of the most brilliant people out there in #compchem within a great group environment. It's a one-of-a-kind opportunity here! I have seen some data, g-xTB will be a blast.

@orca-qc-official.bsky.social · 2y ago

The ORCA team is looking for a postdoctoral fellow or Ph.D. student to work on XTB methodology jointly with the group of Prof. Stefan Grimme (University of Bonn).