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Title: Benchmarking density functional methods for calculation of state energies of first row spin-crossover molecules
Author: Cirera Fernandez, Jordi
Via Nadal, Mireia
Ruiz Sabín, Eliseo
Keywords: Teoria quàntica
Metalls de transició
Quantum theory
Transition metals
Issue Date: 1-Nov-2018
Publisher: American Chemical Society
Abstract: A systematic study of the performance of several density functional methodologies to study spin-crossover (SCO) on first row transition metal complexes is reported. All functionals have been tested against several mononuclear systems containing first row transition metal complexes and exhibiting spin-crossover. Among the tested functionals, the hybrid meta-GGA functional TPSSh with a triple-ζ basis set including polarization functions on all atoms provides the best results across different metals and oxidation states, and its performance in both predicting the correct ground state and the right energy window for SCO to occur is quite satisfactory. The effect of some additional contributions,such as zero-point energies, relativistic effects, and intra-molecular dispersion interactions, has been analyzed. The reported strategy thus expands the use of the TPSSh functional to other metals and oxidation states other than FeII, making it the method of choice to study SCO in first row transition metal complexes. Additionally, the presented results validate the potential use of the TPSSh functional for virtual screening of new molecules with SCO, or its use in the study of the electronic structure of such systems.
Note: Versió postprint del document publicat a:
It is part of: Inorganic Chemistry, 2018, vol. 57, num. 22, p. 14097-14105
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ISSN: 0020-1669
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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