1. Shape resonance induced electron attachment to cytosine: The effect of aqueous media.
- Author
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Verma, Pooja, Mukherjee, Madhubani, Bhattacharya, Debarati, Haritan, Idan, and Dutta, Achintya Kumar
- Subjects
ELECTRON paramagnetic resonance ,METASTABLE states ,BOUND states ,BASE pairs ,RESONANCE ,CYTOSINE - Abstract
We have investigated the impact of microsolvation on shape-type resonance states of nucleobases, taking cytosine as a case study. To characterize the resonance position and decay width of the metastable states, we employed the newly developed DLPNO-based EA-EOM-CCSD method in conjunction with the resonance via Padé (RVP) method. Our calculations show that the presence of water molecules causes a redshift in the resonance position and an increase in the lifetime for the three lowest-lying resonance states of cytosine. Furthermore, there are some indications that the lowest resonance state in isolated cytosine may get converted to a bound state in the presence of an aqueous environment. The obtained results are extremely sensitive to the basis set used for the calculations. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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