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Low-energy glycine formation and spectral masking in star-forming regions

Low-energy glycine formation and spectral masking in star-forming regions

por Albert Rimola | May 27, 2026 | Publication

A direct neutral reaction on forsterite surfaces, rather than the Strecker pathway, can spontaneously form glycine through a low-barrier exoergic process at temperatures above 150 K, but the product’s strong adsorption and distinct altered spectral features may...
Nudged elastic band method in the CRYSTAL code: Theory and Applications

Nudged elastic band method in the CRYSTAL code: Theory and Applications

por Albert Rimola | May 27, 2026 | Publication

The nudged elastic band method has been implemented in the CRYSTAL code using Gaussian-type orbitals and hybrid functionals, and validated on molecular and periodic zeolite systems, enabling accurate transition state characterization for condensed-phase reactions. The...
Nondiffusive Formation of Acetaldehyde on Interstellar Ices: An Atomistic Perspective

Nondiffusive Formation of Acetaldehyde on Interstellar Ices: An Atomistic Perspective

por Albert Rimola | May 27, 2026 | Publication

A computationally modeled non-diffusive three-body reaction on water ice—involving CO hydrogenation near a CH₃ radical—can efficiently form acetaldehyde at temperatures as low as 10 K, offering a potential route to interstellar complex organic molecules in cold...
Confined Chemistry in Space: Zeolite-Supported Fe13 Nanoclusters Modulate CS Reactivity

Confined Chemistry in Space: Zeolite-Supported Fe13 Nanoclusters Modulate CS Reactivity

por Albert Rimola | May 27, 2026 | Publication

Confining an Fe₁₃ nanocluster within a chabazite zeolite shifts the chemoselectivity of CS + H₂ from hydrogenation to C–S bond cleavage (forming H₂S and CH₄ instead of H₂CS), suggesting zeolites as nanoreactors that could help address the interstellar missing sulfur...
A Fully ab Initio Kinetic Monte Carlo Approach for Modeling Adsorption and Diffusion in Interstellar Icy Grain Mantles: The Case of H2S

A Fully ab Initio Kinetic Monte Carlo Approach for Modeling Adsorption and Diffusion in Interstellar Icy Grain Mantles: The Case of H2S

por Albert Rimola | May 27, 2026 | Publication

A multiscale computational framework for H₂S diffusion on amorphous solid water reveals negligible thermal diffusion below 20 K and no universal scaling between binding energy and diffusion barriers, challenging current assumptions in astrochemical models....
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