Quantum Chemical Methods for Molecular Structure, Spectroscopy, and Interaction Energies
This community develops and applies computational methods to determine the electronic structures, energy landscapes, and spectroscopic signatures of small molecules, clusters, and chemical complexes.
The work centers on high-accuracy electronic structure calculations, with density functional theory and coupled-cluster methods forming the core methodological toolkit. These approaches are used to map potential energy surfaces, characterize excited states, and predict rotational and infrared spectra for gas-phase species. A significant portion of the research focuses on noncovalent interactions, particularly hydrogen bonding and halogen bonding, often within the context of water clusters, noble gas complexes, and transition metal compounds. The community also integrates machine learning and Monte Carlo simulations to extend these quantum mechanical calculations to larger systems and complex reaction pathways, providing benchmarks for the accuracy of various theoretical models.
The community is most prominent in research involving argon, where it accounts for 3.9% of all tracked argon papers, and hydrogen, representing 1.3% of hydrogen research. It also holds a notable share of fluorine research at 1.5%.
The community comprises 48,830 papers, with the highest publication volumes in the Journal of Molecular Spectroscopy, The Journal of Chemical Physics, and The Journal of Physical Chemistry A.
Recent work continues to focus on benchmarking the accuracy of density functionals and coupled-cluster methods for specific chemical problems, including the assessment of noncovalent interaction energies, the structural properties of water clusters, and the prediction of UV–Vis spectra for metal complexes.