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- W2093754687 abstract "The lowest electronic states of O2H+ are investigated using ab initio calculations at the internally contracted multireference configuration interaction (MRCI) level. For this purpose, all the CSFs built with the full valence space have been selected as multireferential space and all the valence electrons have been correlated. With this approach, four electronic states, 3A″, 1A″', 1A″ and 1A′ have been found under 22000cm−1. They can be related to the X3Σg −, a 1Δg and b 1Σ+ g states of molecular oxygen. The bent triplet A″ has been identified as the molecular ground electronic state although a singlet A′ state lies close at 1500 cm−1. The proximity of these two states can explain the observed magnetic properties of O2H+. In order to characterize the calculated states, several electric properties of O2H+ have been evaluated with MRCO. The four potential energy surfaces have been generated by fitting the MRCI energies of 83 structures to products of Morse oscillators and Fourier functions. Relative energie..." @default.
- W2093754687 created "2016-06-24" @default.
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- W2093754687 date "1999-06-10" @default.
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- W2093754687 title "MRCI study of the lowest electronic states of O2H+" @default.
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- W2093754687 doi "https://doi.org/10.1080/00268979909483102" @default.
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