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dc.creatorVaquero, V.en_US
dc.creatorPena, I.en_US
dc.creatorMata, S.en_US
dc.creatorLopez, J. C.en_US
dc.creatorAlonso, J. L.en_US
dc.descriptionJ.L. Alonso, E.J. Cocinero, A. Lesarri, M.E. Sanz and J.C. Lopez, \emph{Angew. Chem.V. Vaquero, M.E. Sanz, J.C. Lopez and J.L. Alonso,\emph{J. Phys. Chem. AJ.C. Lopez, M.I. Pe\~{nen_US
dc.descriptionAuthor Institution: Grupo de Espectroscop\ia Molecular (GEM), Departamento de Qu\imica F\isica y; Qu\imica Inorganica, Facultad de Ciencias, Universidad de Valladolid, E-47005 Valladolid, Spainen_US
dc.description.abstractLaser ablation molecular beam Fourier transform microwave spectroscopy LA-MB-FTMW has provided the first observation of the rotational spectra of the glycine-H$_2$O complex. 45, 3471 (2006)} As a continuation of this work we present the study of monohydrated complexes of alanine, uracil and thymine and the first observations of the dihydrated clusters glycine-(H$_2$O)$_2$ and alanine-(H$_2$O)$_2$. For the microsolvated amino acids only the conformer with \emph{cis}-COOH configuration and bifurcated NH$_2$$\cdots$O=C H-bond has been observed. Both alanine-H$_2$O and glycine-H$_2$O have similar shapes: the water molecule being bonded through two O-H$\cdots$O hydrogen bonds to the carboxylic group of the amino acid. The dihydrated clusters have also comparable structures where the two water molecules form a cycle with the COOH group through sequential H-bonds. The rotational spectra of uracyl-H$_2$O and thymine-H$_2$O show the same complexity than those of the bare molecules111, 3443 (2007)}$^{,}$a, M.E. Sanz and J.L. Alonso, \emph{J. Chem. Phys.} 126, 191103 (2007)} due to the hyperfine structure of two quadrupolar $^{14}$N atoms. The detected conformers show comparable structures with the water molecule bonded through two N-H$\cdots$O and O-H$\cdots$O=C hydrogen bonds to the N bases. The structure of hydrogen bond has been investigated by isotopic substitution.en_US
dc.publisherOhio State Universityen_US

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