Molecular spin beyond transition metals
Heavy main-group and open-shell molecules as platforms for molecular spin.
We use quantum chemistry to understand how electronic structure, vibration and light govern magnetism, photophysics and spin dynamics—especially in heavy main-group and open-shell molecules.

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2026 · Journal of Molecular Structure
2026 · Dyes and Pigments
2026 · CrystEngComm
2026 · ACS Omega
2026 · RSC Advances
Manual reviewed snapshot, checked 2026-08-12. Metrics are a reviewed snapshot, not a live scrape.
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Heavy main-group and open-shell molecules as platforms for molecular spin.
Electronic-structure principles that govern exchange, anisotropy and magnetic response.
How vibration and light connect photophysics with spin dynamics.
Reproducible computational methods, machine learning and open research tools.
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Q²M³ is based in UFRRJ’s Department of Fundamental Chemistry and works through experimental and computational collaborations.
The formal Q²M³ alumni register will begin with the group’s first completed cohorts. Earlier supervision is documented separately as Henrique’s academic lineage.
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An open web application for molecular shape analysis.
Open-source utilities for parsing ORCA calculation output.
Open-source tools for plotting spectra from ORCA calculations.
An open web resource for chemical nomenclature.
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Reviewer service is shown only as a reviewed aggregate. Manuscript identities and editorial details remain confidential.
Peer review is reported only in aggregate. Manuscript identities, authors, editors, decisions and review dates remain confidential.
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This space is ready for permission-cleared group photographs and publication artwork with full credits, captions, and useful alt text.
Permission-cleared group and event photographs can be added with names, dates, alt text, captions, rights and credits. No portrait is inferred or fabricated.
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Research notes, explanations, talks, images, and field dispatches from the group.
Research note


This work, published by the Journal of the Brazilian Chemical Society, delves into the luminescent and magnetic properties of a series of…
Research note


The orca_vpot program calculates the electrostatic potential for a set of points provided by the user. But it can be boring or…
Research note


ORCA provides a convenient way to plot orbitals and densities in the form of a small binary called orca_plot. Here is how…
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Henrique C. S. Junior Group leader
We welcome expressions of interest from students and collaborators working on molecular spin, photophysics, quantum chemistry, data and open scientific software.
Current funded opportunities will always be stated explicitly. A general invitation to contact the group does not imply available funding.