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- Title
Ab initio multiconfiguration reference perturbation theory calculations on the energetics of low-energy spin states of iron(III) porphyrins.
- Authors
Ghosh, Abhik; Persson, B Joakim; Taylor, Peter R
- Abstract
Although a major goal of inorganic spectroscopy is to determine the energetics of the low-lying spin states of transition metal complexes, surprisingly little has been accomplished in this respect by means of accurate ab initio calculations. Against this context, we present ab initio multiconfiguration reference perturbation theory (CASPT2) calculations with large basis sets on the low-lying spin states of Fe(III)(P)Cl and [Fe(P)Cl](+) (P(2-)=porphinato). The CASPT2 results on the energetics of various low-lying spin states studied differ significantly, sometimes even dramatically, from those obtained from density functional theory calculations.
- Publication
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry, 2003, Vol 8, Issue 5, p507
- ISSN
0949-8257
- Publication type
Journal Article
- DOI
10.1007/s00775-002-0435-2