Are all polar molecules hydrophilic? Hydration numbers of nitro compounds and nitriles in aqueous solution

2014 ◽  
Vol 16 (26) ◽  
pp. 13262-13270 ◽  
Author(s):  
Naoya Sagawa ◽  
Toshiyuki Shikata
Keyword(s):  
Aqueous Solution ◽  
Nitro Compounds ◽  
Polar Molecules ◽  
Hydration Numbers ◽  
Hydrophilic Hydration

Typical highly polar nitro compounds and nitriles should be classified ashydroneutralcompounds because of their hydration numbers of zero.

THE ACIDITY OF SOME AROMATIC FLUORO ALCOHOLS AND KETONES

1960 ◽  
Vol 38 (3) ◽  
pp. 399-406 ◽  
Author(s):  
Ross Stewart ◽  
R. Van der Linden
Keyword(s):  
Aqueous Solution ◽  
Nitro Compounds ◽  
Ionization Constants

A series of five trifluoroacetophenones and five phenyl trifluoromethyl carbinols have been synthesized and their ionization constants in water measured. They are the unsubstituted, p-methoxy, p-methyl, m-bromo, and m-nitro compounds. The ketones exist as hydrates in aqueous solution and each is about two pK units stronger than the corresponding alcohol. The acidities of both series are correlated by the Hammett relation with ρ values of 1.11 and 1.01 for the ketone hydrates and alcohols respectively. The acid strengths vary from a pKa of 9.18 for m-nitro-α,α,α-trifluoroacetophenone to 12.24 for p-methoxyphenyl trifluoromethyl carbinol.

Catalytic hydrogenation of carbonyl and nitro compounds using an [N,O]-chelate half-sandwich ruthenium catalyst

2019 ◽  
Vol 48 (21) ◽  
pp. 7158-7166 ◽  
Author(s):  
Zi-Jian Yao ◽  
Jing-Wei Zhu ◽  
Nan Lin ◽  
Xin-Chao Qiao ◽  
Wei Deng
Keyword(s):  
Aqueous Solution ◽  
High Activity ◽  
Catalytic Hydrogenation ◽  
Ruthenium Complexes ◽  
Nitro Compounds ◽  
Ruthenium Catalyst ◽  
Half Sandwich

A series of N,O-chelate half-sandwich ruthenium complexes have been synthesized, which exhibited high activity for the catalytic hydrogenation of carbonyl and nitro compounds in aqueous solution.

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