Kinetic Stabilization of Quinone Dianions via Hydrogen Bonding by Water in Aprotic Solvents

2015 ◽  
Vol 119 (35) ◽  
pp. 20319-20327 ◽  
Author(s):  
Patrick A. Staley ◽  
Eric M. Lopez ◽  
Laurie A. Clare ◽  
Diane K. Smith
Keyword(s):  
Hydrogen Bonding ◽  
Aprotic Solvents

Physical gelation of polar aprotic solvents induced by hydrogen bonding modulation of polymeric molecules

2010 ◽  
Vol 46 (31) ◽  
pp. 5722 ◽  
Author(s):  
Duyoun Ka ◽  
Myungeun Seo ◽  
Hyungsam Choi ◽  
Eun Hee Kim ◽  
Sang Youl Kim
Keyword(s):  
Hydrogen Bonding ◽  
Aprotic Solvents ◽  
Physical Gelation

Triple ion formation by the hydrogen-bonding force in protophobic aprotic solvents

1990 ◽  
Vol 94 (15) ◽  
pp. 6073-6079 ◽  
Author(s):  
Masashi. Hojo ◽  
Akihiro. Watanabe ◽  
Taiji. Mizobuchi ◽  
Yoshihiko. Imai
Keyword(s):  
Hydrogen Bonding ◽  
Aprotic Solvents ◽  
Bonding Force ◽  
Ion Formation ◽  
Triple Ion Formation ◽  
Triple Ion

Thermodynamics and structures in solvents coordinating through nitrogen. I. Enthalpies of transfer from water to pyridine and acetonitrile for some monovalent cations and anions

1983 ◽  
Vol 36 (9) ◽  
pp. 1805 ◽  
Author(s):  
S Ahrland ◽  
S Ishiguro ◽  
R Portanova
Keyword(s):  
Hydrogen Bonding ◽  
Dimethyl Sulfoxide ◽  
Aprotic Solvents ◽  
Protic Solvent ◽  
Monovalent Cations ◽  
Enthalpies Of Transfer ◽  
C 30 ◽  
Tetraalkylammonium Ion

The enthalpies of transfer ΔHtr�, between water and the aprotic solvents pyridine and acetonitrile have been determined for a number of 1-1 electrolytes. To calculate ΔHtr� for the single ions, the tatb assumption that ΔHtr�,(Ph4As+) = ΔHtr�BPh4-) for all solvents has been applied. The results are compared with those found earlier for the transfer between water and dimethyl sulfoxide. The values of ΔHtr�, differ widely between different ions, from exothermic by c. 30 kJ/mol to endothermic by about the same amount. Endothermic values are found for Cl- and, though much smaller, for Br-, and also for the large tetraalkylammonium ion Bu4N+. Compared to the differences in ΔHtr�, found between the various ions, the differences found for a certain ion between different solvents are small. The decrease of AH,", in the sequence Cl- > Br- > I- runs almost parallel in the three aprotic solvents, and is much less steep than in water. This reflects the influence of ligand hydrogen bonding in the protic solvent.

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