scholarly journals Solvatochromic Study of Two Carbanion Monosubstituted 4-Tolyl-1,2,4-triazol-1-ium Phenacylids in Binary Hydroxyl Solvent Mixtures

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3910
Author(s):  
Dana Ortansa Dorohoi ◽  
Dan-Gheorghe Dimitriu ◽  
Mihaela Maria Dulcescu-Oprea ◽  
Ana Cezarina Morosanu ◽  
Nicoleta Puica-Melniciuc ◽  
...  

Two 4-tolyl-1,2,4-triazol-1-ium methylids, namely 4-tolyl-1,2,4-triazol-1-ium-phenacylid and 4-tolyl-1,2,4-triazol-1-ium-4′-nitro-phenacylid, are studied from solvatochromic point of view in binary solvent mixtures of water with ethanol and water with methanol. The contributions (expressed in percent) of the universal and specific interactions are separated from the spectral shifts recorded in the visible range for each composition of the binary solvent mixture. The essential role of the orientation and induction interactions in the studied solutions was demonstrated. Based on the statistic cell model of the binary solvent mixture solutions, the difference between the formation energies of ylid-water and ylid-alcohol complexes is estimated. The composition of the ylid’s first solvation shell was also established using the model of the binary solvent mixture solutions. The results obtained from the statistical cell model were compared with those obtained by using the Suppan’s model, resulting a good agreement.

1965 ◽  
Vol 38 (4) ◽  
pp. 940-942
Author(s):  
J. Scanlan

Abstract The single-liquid approximation has been applied to the data of Bristow on ternary systems containing benzene and cyclohexane with one of the rubbers, natural, SBR, or butyl. Satisfactory fits are obtained with a constant value of the interaction constant between the two solvents χ12 which differs markedly, however, from the value obtained by measurements on the binary solvent mixture.


2020 ◽  
Vol 71 (9) ◽  
pp. 1-9
Author(s):  
Mihaela Maria (Dulcescu) Oprea ◽  
Nicoleta Melniciuc Puica ◽  
Antonina Gritco-Todirascu ◽  
Dana Ortansa Dorohoi

The visible electronic absorption band of two 4�-phenyl-1,2,4-triazol-1-ium phenacylids was studied in two binary solvents: water (1) + ethanol (2) and water (1) + methanol (2) with variable content in water. The nature and the contribution of the intermolecular interactions to the spectral shifts in ternary solutions of the studied ylids were estimated based on the Kamlet Taft parameters (�*, a and a) previously measured by Buhvestov and all. The influence of the universal and specific interactions on the visible electronic band of the studied ylids depends on the water concentration in binary solvent. At small water concentrations in binary solvent, the hydrogen complexes of the type ylid-alcohol are predominant, while at high water concentrations, the complexes made by hydrogen bonds between water and ylid molecules prevail. The difference between the energies corresponding to molecular pairs of the types: ylid-water and ylid-alcohol was estimated based on the statistic cell model of the ternary solutions.


RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 51158-51168 ◽  
Author(s):  
Preet Shikha ◽  
B. S. Randhawa ◽  
Tejwant Singh Kang

The composition of IL and EG binary solvent mixture affects the structural, morphological, luminescent and magnetic properties of α-Fe2O3 nanoparticles.


1998 ◽  
Vol 248 (1-4) ◽  
pp. 204-207 ◽  
Author(s):  
S.K. Satija ◽  
P.D. Gallagher ◽  
A. Karim ◽  
L.J. Fetters

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