Studies of Hydrogen‐Bonded Systems. II. Tunneling and Tautomeric Equilibria in the N–H···N Hydrogen Bond of the Guanine—Cytosine Base Pair

1965 ◽  
Vol 42 (6) ◽  
pp. 2177-2180 ◽  
Author(s):  
Robert Rein ◽  
Frank E. Harris
Keyword(s):  
Hydrogen Bond ◽  
Base Pair ◽  
Tautomeric Equilibria ◽  
Hydrogen Bonded Systems ◽  
Hydrogen Bonded

Hydrogen bond effect on the photophysical properties of 2-ureido-4[1H]-pyrimidinone quadruple hydrogen bonded systems

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36279-36287 ◽  
Author(s):  
Jun-Sheng Chen ◽  
Feng-Jiao Zhao ◽  
Yang Yang ◽  
Tian-Shu Chu
Keyword(s):  
Hydrogen Bond ◽  
Photophysical Properties ◽  
Hydrogen Bonded Systems ◽  
Bond Effect ◽  
Hydrogen Bonded

Two different hydrogen bond effects on the photophysical properties of UPy systems in different solutions have been studied.

Proton transfer in hydrogen bonded systems

1960 ◽  
Vol 257 (1288) ◽  
pp. 98-108 ◽  
Keyword(s):  
Hydrogen Bond ◽  
Absorption Band ◽  
Hydrogen Bonds ◽  
Proton Transfer ◽  
Direct Result ◽  
Isotopic Substitution ◽  
Association Energy ◽  
Hydrogen Bonded Systems ◽  
Hydrogen Bonded

Evidence is presented that proton transfer occurs in certain special types of hydrogen bond and that as a direct result the association energy is increased. It is probable that this effect is also responsible for a t least a part of the broadening of the v XH absorption band. In support of this, a number of com pounds are described in which the hydrogen bonds are weakened by isotopic substitution. The implications of these findings are discussed.

Properties of strong hydrogen-bonded systems. II.Ab initioSCF-MO study of the hydrogen bond between nitric acid and ammonia

1980 ◽  
Vol 1 (4) ◽  
pp. 417-419 ◽  
Author(s):  
Z. Latajka ◽  
M. M. Szcz�?niak ◽  
H. Ratajczak ◽  
W. J. Orville-Thomas
Keyword(s):  
Hydrogen Bond ◽  
Nitric Acid ◽  
Hydrogen Bonded Systems ◽  
Hydrogen Bonded

Application of photoelectron spectroscopy to intramolecularly hydrogen-bonded systems. Part II. On the n–π* blue shift of carbonyl-containing molecules

1976 ◽  
Vol 54 (20) ◽  
pp. 3203-3205 ◽  
Author(s):  
R. S. Brown
Keyword(s):  
Hydrogen Bond ◽  
Intramolecular Hydrogen Bond ◽  
Photoelectron Spectroscopy ◽  
Blue Shift ◽  
Photoelectron Spectra ◽  
Ultraviolet Spectra ◽  
Hydrogen Bonded Systems ◽  
Intramolecular Hydrogen ◽  
Hydrogen Bonded

The photoelectron spectra of 2-hydroxycyclohexanone and 2-methoxycyclohexanone, show that the ionization assigned to removal of the carbonyl n-electron is 0.6 eV higher in the former, presumably due to the intramolecular hydrogen bond. The ultraviolet spectra of these molecules also exhibit a marked blue shift of the n → π* transition in the former of roughly 0.5 eV. A discussion of the observations includes consideration of the effect of the intramolecular hydrogen bond on the ground and excited or ion state.

Sign in / Sign up

Export Citation Format

Share Document