Low Temperature Physics: 29, 809 (2003); https://doi.org/10.1063/1.1614199 (5 pages)
Физика Низких Температур: Том 29, Выпуск 9-10 (Сентябрь 2003), c. 1065-1070    ( к оглавлению , назад )

Molecular structures of thymidine isomers isolated in low-temperature inert matrices

A.Yu. Ivanov1, S.A. Krasnokutski2, and G.G. Sheina1

1 B.Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: ivanov@ilt.kharkov.ua

2 Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, Göttingen 37073, Germany

Аннотация

The Fourier transform infrared spectra of 2`-deoxyribonucleoside — thymidine (dT) in low-temperature Ar matrices are obtained in the range 4000–1300 cm–1. It is determined that anti-conformers of thymidine are dominant. The ribose rings of the main anti-conformers dT_a0, dT_a1 are in the C2`-endo conformation, but the ribose rings of minor anti-conformers dT_a2, dT_a3 have the C3`-endo conformation, stabilized by intramolecular hydrogen bonds O3`H…O5` and O5`H…O3`, respectively. The main syn-conformer dT_s2 is stabilized by the intramolecular hydrogen bond O5`H…O2 and has C2`-endo conformation of the ribose ring.

PACS:
33.15.-e - Properties of molecules (see also 95.30.Ky in astrophysics)
67.80.Cx - Structure, lattice dynamics, and sound propagation