Journal
CHEMICAL PHYSICS LETTERS
Volume 331, Issue 2-4, Pages 229-234Publisher
ELSEVIER
DOI: 10.1016/S0009-2614(00)01218-5
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Some uranium (U(VI) and U(V)) triatomic molecules and cations with the general formula XUY (X,Y = C,N,O) and a charge varying from O to +2 have been studied using multiconfigurational second-order perturbation theory (CASSCF/CASPT2) and Density Functional Theory (DFT). Geometry optimizations and infrared harmonic frequency calculations have been carried out and a comparison with available experimental data has been performed. This study shows that CASSCF/CASPT2 is capable of handling actinide systems, where multiconfiguratioanl and relativistic effects are essential. (C) 2000 Elsevier Science B.V. All rights reserved.
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