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On the calculation of lanthanide systems. The spectral parameters of praseodymium trivalent ion
- Source :
- Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 18, Iss 2, Pp 78-86 (2023)
- Publication Year :
- 2023
- Publisher :
- Academy of Sciences of Moldova, Institute of Chemistry, 2023.
-
Abstract
- In this work, taking the Pr(III) ion as a suitable case study, the authors test the capacity of a series of Gaussian Type Orbitals (GTOs) basis sets to account for the atomic spectra of lanthanide ions. An extended relevance of this assessment can be found in modeling the luminescence of lanthanide-based materials. It was selected the Pr(III) case because it shows a rather rich collection of experimental data, emerging from the f2 and fd configurations. The energy barycenters of spectral multiplets can be equated analytically in terms of the so-called Slater-Condon parameters. By multi-configurational ab initio procedures, with basis sets from existing GTO repositories, the calculated f→f transitions are moderately higher than the experimental values, while the relative energies of fd states undergo both under- and over-estimation. The GTO shortcomings, that are impacting the accuracy, were debated, the critical perspective spreading the seeds of future development.
Details
- Language :
- English
- ISSN :
- 18571727 and 23451688
- Volume :
- 18
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.3721799568344773a70010fb84e46d23
- Document Type :
- article
- Full Text :
- https://doi.org/10.19261/cjm.2023.1146