Investigation of the ion-molecule and ion-ion interactions in solutions of LiClO4 and LiNCS in a dimethyl sulfoxide-nitromethane binary solvent by infrared spectroscopy

1986 ◽  
Vol 27 (2) ◽  
pp. 250-255
Author(s):  
I. S. Perelygin ◽  
N. N. Beloborodova ◽  
G. R. Mustafina
2013 ◽  
Vol 117 (36) ◽  
pp. 18375-18380 ◽  
Author(s):  
Nataliia Mozhzhukhina ◽  
Lucila P. Méndez De Leo ◽  
Ernesto Julio Calvo

2012 ◽  
Vol 101 (12) ◽  
pp. 4458-4471 ◽  
Author(s):  
Stanisław Boryczka ◽  
Maria Jastrzebska ◽  
Ewa Bębenek ◽  
Joachim Kusz ◽  
Maciej Zubko ◽  
...  

1983 ◽  
Vol 36 (10) ◽  
pp. 1991 ◽  
Author(s):  
NK Graham ◽  
JB Gill ◽  
DC Goodall

The metals Ti, Zr, V, Cr, Mo, Fe, Ni and Sn dissolve electrolytically in the binary solvent system dimethyl sulfoxide-sulfur dioxide, forming metal disulfates; W forms sulfate. The metals dissolve electrolytically in other binary systems containing sulfur dioxide, forming mixtures of sulfur oxyanions. The importance of solvent parameters in metal reactivity is discussed, together with the mechanism of the reactions.


2015 ◽  
Vol 17 (27) ◽  
pp. 17557-17561 ◽  
Author(s):  
Chiho Lee ◽  
Hyewon Son ◽  
Sungnam Park

Two-dimensional infrared (2DIR) spectroscopy was successfully used to investigate the acid dissociation equilibrium of HN3 in methanol (CH3OH) and dimethyl sulfoxide (DMSO).


Molecules ◽  
2020 ◽  
Vol 25 (24) ◽  
pp. 5975
Author(s):  
Marcella T. Dignani ◽  
Thaís A. Bioni ◽  
Thiago R. L. C. Paixão ◽  
Omar A. El Seoud

We studied the dissolution of microcrystalline cellulose (MCC) in binary mixtures of dimethyl sulfoxide (DMSO) and the ionic liquids: allylbenzyldimethylammonium acetate; 1-(2-methoxyethyl)-3-methylimidazolium acetate; 1,8-diazabicyclo [5.4.0]undec-7-ene-8-ium acetate; tetramethylguanidinium acetate. Using chemometrics, we determined the dependence of the mass fraction (in %) of dissolved cellulose (MCC-m%) on the temperature, T = 40, 60, and 80 °C, and the mole fraction of DMSO, χDMSO = 0.4, 0.6, and 0.8. We derived equations that quantified the dependence of MCC-m% on T and χDMSO. Cellulose dissolution increased as a function of increasing both variables; the contribution of χDMSO was larger than that of T in some cases. Solvent empirical polarity was qualitatively employed to rationalize the cellulose dissolution efficiency of the solvent. Using the solvatochromic probe 2,6-dichloro-4-(2,4,6-triphenylpyridinium-1-yl)phenolate (WB), we calculated the empirical polarity ET(WB) of cellobiose (a model for MCC) in ionic liquid (IL)–DMSO mixtures. The ET(WB) correlated perfectly with T (fixed χDMSO) and with χDMSO (fixed T). These results show that there is ground for using medium empirical polarity to assess cellulose dissolution efficiency. We calculated values of MCC-m% under conditions other than those employed to generate the statistical model and determined the corresponding MCC-m% experimentally. The excellent agreement between both values shows the robustness of the statistical model and the usefulness of our approach to predict cellulose dissolution, thus saving time, labor, and material.


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