Theoretical study of resonance formation in microhydrated molecules. II. Thymine-(H2O)n, n = 1,2,3,5

Agnieszka Sieradzka; Jimena D Gorfinkiel

doi:10.1063/1.4993946

Theoretical study of resonance formation in microhydrated molecules. II. Thymine-(H₂O)_n, n = 1,2,3,5

J Chem Phys. 2017 Jul 21;147(3):034303. doi: 10.1063/1.4993946.

Authors

Agnieszka Sieradzka¹, Jimena D Gorfinkiel¹

Affiliation

¹ School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom.

PMID: 28734306
DOI: 10.1063/1.4993946

Abstract

We have investigated the effect of microsolvation on the low-lying pure shape π^* resonances of thymine. Static-exchange R-matrix calculations for elastic electron scattering from microhydated thymine, i.e., Thy-(H₂O)_n with n = 1,2,3,5 are discussed. We look at the additive effect of water molecules hydrogen-bonding to thymine. The results for Thy-(H₂O)₅ show that both π^* resonances appear at lower energy in the cluster than in isolated thymine, but that the energy shift is different for each resonance. We discuss how our results could help explain the quenching of hydrogen loss in dissociative electron attachment of microhydrated thymine recently recorded experimentally.