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Products of the reactions of sparteine-2-thione with CuBr2 in protic and aprotic solvents
Polyhedron, 2011Abstract Reactions of copper(II) bromide with racemic sparteine-2-thione (SSp) in a 1:1 M ratio yielded two new complexes, whose structures depend on the solvent used. In acetonitrile, the reaction product is a sulfur-bridged dinuclear [CuBr2(μ-SSp)]2 complex (1) in which sparteine-2-thione acts as a bridging S-ligand, while in methanol it is a CuBr2
Urszula Rychlewska +3 more
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SET-LRP of 2-hydroxyethyl acrylate in protic and dipolar aprotic solvents
Polymer Chemistry, 2013Cu(0) wire-mediated single-electron transfer living radical polymerization (SET-LRP) of 2-hydroxyethyl acrylate (HEA) was performed in protic solvents, MeOH, binary mixtures of MeOH and EtOH with HO, and HO, and in the dipolar aprotic solvent, DMSO.
Leng +6 more
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The Journal of Physical Chemistry B
Furfurals serve as a pivotal, suitable biomass-derived platform chemicals for producing assorted value-added chemicals, biofuels, and biochemicals. Ionic liquids (ILs) are used to form various furfurals from lignocellulosic biomass (LCB). However, different forms of furfurals interact differently with imidazolium-based ionic liquids (IMILs), making ...
Sweta Jha, Praveenkumar Sappidi
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Furfurals serve as a pivotal, suitable biomass-derived platform chemicals for producing assorted value-added chemicals, biofuels, and biochemicals. Ionic liquids (ILs) are used to form various furfurals from lignocellulosic biomass (LCB). However, different forms of furfurals interact differently with imidazolium-based ionic liquids (IMILs), making ...
Sweta Jha, Praveenkumar Sappidi
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Infrared Spectroscopic Study of the Solvation of Tetramethylurea in Protic + Aprotic Mixed Solvents
Journal of Solution Chemistry, 2002The infrared spectra of tetramethylurea have been measured in mixtures of dimethylsulfoxide or acetonitrile with D2O or deuterated methanol (CH3OD). Marked solvatochroism is observed for bands associated with the C=O and C–N stretches of tetramethylurea, with the former moving to lower wavenumber, and the latter to higher, as the concentration of the ...
G. Rezaei Behbehani +3 more
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Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2016
Although it has been widely recognized that hydrogen bonds play a significant role in the photophysics of molecules, this phenomenon has rarely been applied to the solvatochromic method for determination of dipole moments. The difference in the dipole moment between the ground and excited state was determined in protic and aprotic solvents using both ...
Christopher J, Talone +4 more
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Although it has been widely recognized that hydrogen bonds play a significant role in the photophysics of molecules, this phenomenon has rarely been applied to the solvatochromic method for determination of dipole moments. The difference in the dipole moment between the ground and excited state was determined in protic and aprotic solvents using both ...
Christopher J, Talone +4 more
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Protic vs Aprotic Solvent Effect on Proton Transfer in 3-Hydroxyisoquinoline: A Theoretical Study
The Journal of Physical Chemistry A, 2015In this work, the structures, energetics, and tautomerizations in 3-hydroxyisoquinoline (3HIQ) in both the ground state and the excited state have been theoretically investigated by the MP2, TDDFT, and CASPT2 methods, respectively. The solvent effect including the implicit solvent and explicit solvent on the structures, energetics, and tautomeizations ...
Bo, Xiao +3 more
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Rates of Bimolecular Substitution Reactions in Protic and Dipolar Aprotic Solvents
1967Publisher Summary Bimolecular reactions between anions and polar molecules are very much faster in dipolar aprotic solvents than in protic solvents. This simple observation has led to a reassessment of the chemistry of those rate and equilibrium processes that involve anions in solution. Comparison of rates of S N 2 reactions in protic and in dipolar
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Plastoquinone photolysis in protic and aprotic solvents and in model membranes
Biochemical Society Transactions, 1986MARY BLACKWELL, KLEONlKl GOUNARIS
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