N-K spectra of adenine amino tautomers

Photofragmentation in selected tautomers of protonated adenine.

The photofragmentation by UV excitation of selectively prepared 1(+) and 3(+) tautomers of protonated adenine is studied after excitation at a 266 and 263 nm wavelengths with two different experimental set-ups located in Seoul and Orsay. While the production of 1(+) tautomers with an electrospray ion source is now well accepted, calculations were used to ascribe the preparation of 3(+) tautomer...

On the Rational Recursive Sequence X_{N+1}=ƔX_{N-K}+(AX_N+BX_{N-K})⁄(CX_N-DX_{N-K})

Theoretical study of the properties of adenine amino acid tetomers with C60

In this research at the Adenine tautomers and their fullerene derivatives were optimized. NBO calculations and NMR for the tautomers and their Fullerene derivatives were carried out at the B3lyp/6-31G*quantum chemistry level. The core and the valence electrons of atoms were compared. Other cases examined in this study, resonance energy, chemical potential (µ ),...

Polarization, Barriers and Tunneling Times of Some Tautomers of Adenine and Thymine

The relative stability of the normal and tautomeric forms of adenine and thymine has been formerly analysed with semi-empirical and abinitio methods [1—2]. In the same way we have now calculated the charge distribution of several excited states in order to determine the intramolecular charge transfer involved in the tautomerization process. Moreover, we have obtained the direction of the polari...

K 3 spectra Markus

We introduce the notion of a K3 spectrum in analogy with that of an elliptic spectrum and show that there are “enough” K3 spectra in the sense that for all K3 surfaces X in a suitable moduli stack of K3 surfaces there is a K3 spectrum whose underlying ring is isomorphic to the local ring of the moduli stack in X with respect to the etale topology, and similarly for the ring of formal functions ...