Solvation Structures of Tetraethylammonium Bromide and Tetrafluoroborate in Aqueous Binary Solvents with Ethanol, Trifluoroethanol, and Acetonitrile

2020 ◽  
Vol 124 (24) ◽  
pp. 5009-5020
Author(s):  
Toshiyuki Takamuku ◽  
Misaki Yamamoto ◽  
Takahiro To ◽  
Masaru Matsugami
Keyword(s):  
Binary Solvents ◽  
Tetraethylammonium Bromide

A description of effect of composition of mixed binary solvents on processes in solutions

1988 ◽  
Vol 53 (4) ◽  
pp. 671-685 ◽  
Author(s):  
Oldřich Pytela ◽  
Miroslav Ludwig
Keyword(s):  
Gibbs Energy ◽  
Mixed Solvents ◽  
Theoretical Description ◽  
Energy Change ◽  
Binary Solvents ◽  
Gibbs Energy Change ◽  
Order Model ◽  
Significant Difference

A theoretical description of the effect of changed composition of mixed solvents on processes in solutions has been suggested on the basis of the proportionality between the Gibbs energy change of the process and that of the solvent due to the transition from pure components to the mixture. The additional Gibbs energy has been expressed by means of the so-called classical functions by Margules, van Laar-Wohl, and van Laar-Null. The application to 115 various processes (pK, IR, UV-VIS, NMR, log k, and others) has confirmed that the theoretical presumptions are justified, the most suitable being Margules' 4th order model which shows a statistically significant difference from the models of lower orders.

The effect of cation concentration on the nitrogen splitting constant of nitroxide free radicals

1990 ◽  
Vol 55 (10) ◽  
pp. 2377-2380
Author(s):  
Hamza A. Hussain
Keyword(s):  
Hydrogen Peroxide ◽  
Hydrogen Bonding ◽  
Free Radicals ◽  
Esr Spectroscopy ◽  
The Other ◽  
Tetraethylammonium Bromide ◽  
Splitting Constant ◽  
The One ◽  
Positively Charged ◽  
Two Equilibria

Nitroxide free radicals prepared from diethylamine, piperidine and pyrrolidine by oxidation with hydrogen peroxide were studied by ESR spectroscopy. The changes in the 14N splitting constant (aN) caused by the addition of KBr or tetraethylammonium bromide were measured in dependence on the concentration of the ions. For diethylamine nitroxide and piperidine nitroxide, the results are discussed in terms of two equilibria: the one, involving the anion, is associated with a gain or loss of hydrogen bonds to the nitroxide oxygen atom, the other is associated with the formation of solvent shared units involving the cation, which results in changes in the hydrogen bonding strenght. The large increase in the aN value in the case of pyrrolidine nitroxide is explained in terms of an interaction from one side of the positively charged N atom; the increase in aN in the case of diethylamine and piperidine nitroxides is explained in terms of interactions with both sides of the positively charged N atom.

Study on the solid-liquid equilibrium of l-malic acid in binary solvents

2021 ◽  
Vol 325 ◽  
pp. 115113
Author(s):  
Zhicheng Gao ◽  
Ying Li ◽  
Xunqiu Wang
Keyword(s):  
Malic Acid ◽  
Binary Solvents ◽  
Liquid Equilibrium ◽  
Solid Liquid

Solubility and thermodynamic analysis of musk ketone in four binary solvents from T= (273.15 to 313.15) K

2021 ◽  
Vol 329 ◽  
pp. 115415
Author(s):  
Yuwei Hua ◽  
Genlei Wei ◽  
Shishuai Shi ◽  
Chunmei Cao ◽  
Xuening Zhang ◽  
...  
Keyword(s):  
Thermodynamic Analysis ◽  
Binary Solvents

Iodic Acid (HIO3) in Combination with Tetraethylammonium Bromide as a Catalyst for Selective and Accelerated Sulfoxidation

2005 ◽  
Vol 35 (21) ◽  
pp. 2805-2810 ◽  
Author(s):  
Paresh D. Salgaonkar ◽  
Vidyanand G. Shukla, ◽  
K. G. Akamanchi
Keyword(s):  
Tetraethylammonium Bromide ◽  
Iodic Acid

ChemInform Abstract: Tetraethylammonium Bromide-Catalyzed Oxidative Thioesterification of Aldehydes and Alcohols.

ChemInform ◽  
2014 ◽  
Vol 45 (21) ◽  
pp. no-no
Author(s):  
Xuebin Zhu ◽  
Yan Shi ◽  
Haibin Mao ◽  
Yixiang Cheng ◽  
Chengjian Zhu
Keyword(s):  
Tetraethylammonium Bromide
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