Two-dimensional (2D) optical spectroscopy utilizing multiple ultrafast coherent laser pulses
in the infrared or UV-vis frequency range has been used to study protein structure and …

6-Methyl-2-butylureidopyrimidone dimerizes via four hydrogen bonds in the solid state as
well as in CHCl3 solution via a donor− donor− acceptor− acceptor (DDAA) array of …

Publisher Summary This chapter reviews the substituent tautomerism of six-membered
heterocycles that has appeared since 1976. The most significant development since 1976 is …

It has long been postulated that rare tautomeric or ionized forms of DNA bases may play a
role in mispair formation. To investigate the role this phenomenon plays in the mispairing of …

Results are presented from an experimental study of the infrared spectra of cytosine and its
deuteriated derivatives isolated in an inert Ar matrix and also in an N2 matrix deposited on a …

The present IR− UV depletion spectroscopic study extends the recent data of literature by
providing evidence for the existence of a fourth form of guanine in the gas phase. The …

Infrared laser spectroscopy is used to study the four lowest energy tautomers of guanine,
isolated in helium nanodroplets. The large number of vibrational bands observed in the …

The stabilities of all possible purine/pyrimidine pairings between the isomeric nucleobases
isocytosine (iso-C) and isoguanine (iso-G) and standard genomic bases are reported for two …

The absorption spectra and transition moment directions of the four DNA bases and uracil
were calculated, utilizing the semiempirical INDO/S-CI method and the ab initio CIS/6-31G …

The vibrational spectra of the nucleic acid bases adenine, thymine, guanine, and cytosine
are calculated in the frame of density functional theory (DFT). In particular we use the Kohn …