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A theoretical study of the proton transfer process in the spin-forbidden reaction 1HNO(1A′) + OH−→3NO−(3Σ−) + H2O

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  • Theoretical Chemistry
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Chinese Science Bulletin

Abstract

The spin-forbidden reaction 1HNO(1A′)+OH−→3NO−(3Σ−)+H2O has been extensively explored using various CASSCF active spaces with MP2 corrections in several basis sets. Natural bond orbital (NBO) analysis, together with the NBO energetic (deletion) analysis, indicates that the two isomers have nearly equal total energy and could compete with each other in the title reaction. More significantly, the singlet/triplet surface crossing regions have been examined and the spin-orbit coupling (SOC) and energetics have been computed. The computational results indicate that the SOC is very large at the crossing point T1/S0 trans (ca. 40.9 cm−1). Moreover, the T1/S0 trans has a low energy of 10.67 kcal/mol relative to that of trans-S0. Therefore, the surface crossing to the triplet state seems much more efficient at the T1/S0 trans region along the minimum energy path (MEP), However, The values of single (P 1 ISC) and double (P 2 ISC) passes estimated at T1/S0 trans show that the ISC occurs with a little probability.

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Authors and Affiliations

  1. College of Life science and Chemistry, Tianshui Normal University, Tianshui, 741001, China

    LingLing Lü & XiaoFang Wang

  2. College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China

    YongCheng Wang

  3. Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China

    GuoLiang Dai

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  1. LingLing Lü
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  2. XiaoFang Wang
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  3. YongCheng Wang
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  4. GuoLiang Dai
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Correspondence to LingLing Lü.

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Supported by the Natural Science Education Foundation of Gansu Province, China (Grant No. 021-22)

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Lü, L., Wang, X., Wang, Y. et al. A theoretical study of the proton transfer process in the spin-forbidden reaction 1HNO(1A′) + OH−→3NO−(3Σ−) + H2O. Chin. Sci. Bull. 53, 1489–1496 (2008). https://doi.org/10.1007/s11434-008-0094-y

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  • DOI: https://doi.org/10.1007/s11434-008-0094-y

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