C–H/O interactions of nucleic bases with a water molecule: a crystallographic and quantum chemical study

CrystEngComm ◽  
2014 ◽  
Vol 16 (43) ◽  
pp. 10089-10096 ◽  
Author(s):  
D. Ž. Veljković ◽  
V. B. Medaković ◽  
J. M. Andrić ◽  
S. D. Zarić
Keyword(s):  
Molecular Recognition ◽  
Water Molecule ◽  
Quantum Chemical ◽  
Quantum Chemical Study ◽  
Chemical Study ◽  
Dna And Rna ◽  
Nucleic Bases

The C–H/O interactions of nucleic bases are substantially stronger than the C–H/O interactions of benzene and pyridine. These results can be very important for molecular recognition of DNA and RNA.

The infrared absorption intensities of the water molecule: A quantum chemical study

1986 ◽  
Vol 84 (10) ◽  
pp. 5715-5727 ◽  
Author(s):  
David J. Swanton ◽  
George B. Bacskay ◽  
Noel S. Hush
Keyword(s):  
Water Molecule ◽  
Infrared Absorption ◽  
Quantum Chemical ◽  
Quantum Chemical Study ◽  
Chemical Study

A quantum-chemical study of the interaction of the water molecule with silver iodide surface clusters

1976 ◽  
Vol 43 (1) ◽  
pp. 45-48 ◽  
Author(s):  
V.B. Volkov ◽  
D.A. Zhogolev ◽  
R.A. Bakhanova ◽  
V.J. Kiselev
Keyword(s):  
Water Molecule ◽  
Quantum Chemical ◽  
Silver Iodide ◽  
Quantum Chemical Study ◽  
Chemical Study

A quantum-chemical study of dehydration of ortho forms of formaldehyde and formic acid

1986 ◽  
Vol 51 (9) ◽  
pp. 1819-1833 ◽  
Author(s):  
Jaroslav Leška ◽  
Eugen Németh ◽  
Dušan Loos
Keyword(s):  
Oxygen Atom ◽  
Water Molecule ◽  
Formic Acid ◽  
Gas Phase ◽  
Quantum Chemical ◽  
Quantum Chemical Study ◽  
Chemical Study ◽  
Reaction Paths ◽  
Full Optimization ◽  
Acid Catalyzed

Gas-phase dehydration of methanediol (I) and methanetriol (II) has been studied by the MINDO/3 method with full optimization of the reaction paths. The intramolecular dehydration goes via high barriers (I 257.4, II 193.3 kJ mol-1). The acid-catalyzed dehydration involving protonation at oxygen atom of I goes via a considerably lower barrier (63.3 kJ mol-1), whereas protonation at oxygen atom of II results in practically spontaneous dehydration (0.4 kJ mol-1), which is the reason for the formic acid not being hydrated in water. Deprotonation of the protonated formaldehyde (II) and protonated formic acid (IV) is connected with high barriers (429.1 and 523.0 kJ mol-1, resp.). The deprotonation by a water molecule added to III and IV involves substantially lower barriers (53.9 and 96.3 kJ mol-1, resp.).

Quantum-chemical study of interaction between a hydride ion and a water molecule

1986 ◽  
Vol 27 (2) ◽  
pp. 315-316
Author(s):  
V. I. Baranovskii ◽  
G. B. Perminova ◽  
O. V. Sizova
Keyword(s):  
Water Molecule ◽  
Quantum Chemical ◽  
Quantum Chemical Study ◽  
Chemical Study ◽  
Hydride Ion
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