scholarly journals Conductometric studies of 1, 3, 5 –triazinothiocarbamide at different concentration and temperature

2021 ◽  
Vol 16 (2) ◽  
pp. 151-157
Author(s):  
DD Sonone ◽  
ME Shelke ◽  
DT Tayade
Keyword(s):  
Thermodynamic Parameters ◽  
Association Constant ◽  
Ion Association ◽  
Vital Role ◽  
Ion Pair ◽  
Pair Formation ◽  
Drug Diffusion ◽  
Ion Pair Formation

Conductivity plays vital role in drug diffusion. Thermodynamic parameters affected by substituents of drug. Thermodynamic parameters of 1, 3, 5 –triazinothiocarbamide (1a) have been investigated by using conductometrically carried out at different molar concentrations. This work highlights investigation of G, K and µ values. The thermodynamic parameters viz. ΔH, ΔS and ∆G for ion pair formation determine from the value of ion association constant. This technique is suitable and accurate to study of pharmokinetics and pharmodynamics parameters.

The synthesis, thermochromism, and cycloadditive properties of an O-methylenethioquinone system

1977 ◽  
Vol 55 (21) ◽  
pp. 3763-3773 ◽  
Author(s):  
P. de Mayo ◽  
H. Y. Ng
Keyword(s):  
Thermodynamic Parameters ◽  
Acid Derivative ◽  
Acid Catalysis ◽  
Ion Pair ◽  
Pair Formation ◽  
Membered Ring ◽  
Diels Alder ◽  
Ion Pair Formation ◽  
Thiosalicylic Acid

The irradiation of 4,5-benzo-1,2-dithiole-3-thione (1) in the presence of cyclopentene and of tetramethylethylene gives 1:1 adducts. In solution these adducts are in equilibrium with eight-membered-ring dimers. The thermodynamic parameters for this equilibrium have been determined. The available evidence suggests a head-to-head configuration. These same monomeric adducts give Diels–Alder addition products with normal dienophiles, but also react similarly with simple thiones (adamantanethione, norbornanethione, cyclohexanethione) to give thioorthoesters. The structures of the latter substances have been demonstrated both spectroscopically and, chemically, by hydrolysis to a thiosalicylic acid derivative. The thioorthoesters have been shown to undergo stereoisomerization on acid catalysis. Of the two mechanisms considered for this process (reversal to thiones and ion-pair formation) the former has been excluded.

Hydration and ion association of aqueous choline chloride and chlorocholine chloride

2019 ◽  
Vol 21 (21) ◽  
pp. 10970-10980 ◽  
Author(s):  
Saadia Shaukat ◽  
Marina V. Fedotova ◽  
Sergey E. Kruchinin ◽  
Marija Bešter-Rogač ◽  
Črtomir Podlipnik ◽  
...  
Keyword(s):  
Choline Chloride ◽  
Ion Association ◽  
Ion Pair ◽  
Pair Formation ◽  
Hydroxyl Group ◽  
Chlorocholine Chloride ◽  
Ion Pair Formation ◽  
Contact Ion Pair ◽  
Weak Contact

Choline hydration occurs predominantly via its hydroxyl group, and weak contact ion pair formation with Cl− is via the onium moiety.

Extraction of organic acids by ion-pair formation with tri-n-octylamine

1985 ◽  
Vol 178 ◽  
pp. 189-195 ◽  
Author(s):  
M. Puttemans ◽  
L. Dryon ◽  
D.L. Massart
Keyword(s):  
Organic Acids ◽  
Ion Pair ◽  
Pair Formation ◽  
Ion Pair Formation

Charge-transfer stabilization of molecular bicimers: ion pair formation in diarylmethanes

1988 ◽  
Vol 92 (7) ◽  
pp. 1703-1705 ◽  
Author(s):  
R. J. Locke ◽  
Steve H. Modiano ◽  
E. C. Lim
Keyword(s):  
Charge Transfer ◽  
Ion Pair ◽  
Pair Formation ◽  
Ion Pair Formation
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