학술논문
Shape resonance induced electron attachment to cytosine: The effect of aqueous media.
Document Type
Article
Author
Source
Subject
*ELECTRON paramagnetic resonance
*METASTABLE states
*BOUND states
*BASE pairs
*RESONANCE
*CYTOSINE
*
*
*
*
*
Language
ISSN
0021-9606
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]