Intramolecular Hydrogen Bond Reverting the Solvent Effect on Phosphorus Hyperfine Coupling Constants of β-Phosphorylated Nitroxides

ChemPhysChem ◽  
2016 ◽  
Vol 17 (23) ◽  
pp. 3954-3963 ◽  
Author(s):  
Gérard Audran ◽  
Lionel Bosco ◽  
Paul Brémond ◽  
Teddy Butscher ◽  
Sylvain R. A. Marque ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Solvent Effect ◽  
Intramolecular Hydrogen Bond ◽  
Hyperfine Coupling ◽  
Coupling Constants ◽  
Hyperfine Coupling Constants ◽  
Intramolecular Hydrogen

Solvent effect on the intramolecular hydrogen bond in 8-quinolinol N-oxide

1996 ◽  
Vol 25 (2) ◽  
pp. 179-189 ◽  
Author(s):  
T. Dziembowska ◽  
Z. Malarski ◽  
B. Szczodrowska
Keyword(s):  
Hydrogen Bond ◽  
Solvent Effect ◽  
Intramolecular Hydrogen Bond ◽  
Intramolecular Hydrogen

Solvent Effect on the Isomeric Equilibrium of Carbohydrates:  The Superior Ability of 2,2,2-Trifluoroethanol for Intramolecular Hydrogen Bond Stabilization†

2001 ◽  
Vol 123 (50) ◽  
pp. 12605-12610 ◽  
Author(s):  
Antonio Molinaro ◽  
Cristina De Castro ◽  
Rosa Lanzetta ◽  
Emiliano Manzo ◽  
Michelangelo Parrilli
Keyword(s):  
Hydrogen Bond ◽  
Solvent Effect ◽  
Intramolecular Hydrogen Bond ◽  
Intramolecular Hydrogen

Concerning the nonexistence of the intramolecular hydrogen bond in 2-nitrothiophenol

1977 ◽  
Vol 55 (21) ◽  
pp. 3732-3735 ◽  
Author(s):  
Ted Schaefer ◽  
William J. E. Parr
Keyword(s):  
Hydrogen Bond ◽  
Free Energy ◽  
Intramolecular Hydrogen Bond ◽  
Energy Difference ◽  
Coupling Constants ◽  
Spin Coupling ◽  
Free Energy Difference ◽  
Spin Coupling Constants ◽  
Intramolecular Hydrogen ◽  
Spin Spin Coupling

The long-range spin–spin coupling constants between the sulfhydryl proton and the ring protons in 2-nitrothiophenol in CDCl3 and C6D6 solutions suggest the presence of two conformers in which the S—H bond prefers the benzene plane. The conformer in which the S—H bond lies trans to the nitro group is favoured over the cis conformer by a free energy difference of 0.5 ± 0.2 kcal/mol at 305 K. Apparently any intramolecular hydrogen bond is very weak compared to that in 2-nitrophenol.

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