A Novel Phenolic Zwitterion
نویسندگان
چکیده
منابع مشابه
Gas-phase zwitterion stabilization by a metal dication.
Although solution-phase amino acids normally exist as zwitterions, this is not the case under gas-phase conditions, where the canonical structure is favored. Complexation to a metal ion can increase the relative zwitterion stability, but even then, the zwitterion (salt bridge, SB) form is not the most stable form of such singly charged complexes except for basic amino acids. Computation suggest...
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15 صفحه اولProline zwitterion dynamics in solution, glass, and crystalline state.
Raman and Raman optical activity spectra of L- and D-proline zwitterionic (PROZW) forms were recorded for H(2)O and D(2)O solutions in a wide frequency range and analyzed with respect to the motion of the proline ring and rotation of the carbonyl group. The solution spectra were additionally compared to Raman scattering of glass and crystalline powder proline. Solution and glass spectral band b...
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Zwitterionic and canonical isomers of a novel quinonoid species were studied using second-order Møller–Plesset perturbation theory with 6-31+G**+5(sp)4d basis sets. An experimental report on the zwitterion being the most stable isomer was confirmed. In particular, the zwitterionic isomer is lower than the lowest canonical tautomer by 1.42 kcal/ mol. Binding an electron to all isomers studied wa...
متن کاملOne water molecule stabilizes the cationized arginine zwitterion.
Singly hydrated clusters of lithiated arginine, sodiated arginine, and lithiated arginine methyl ester are investigated using infrared action spectroscopy and computational chemistry. Whereas unsolvated lithiated arginine is nonzwitterionic, these results provide compelling evidence that attachment of a single water molecule to this ion makes the zwitterionic form of arginine, in which the side...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1971
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v71-594