ChemInform Abstract: Solvent Effects on Complex Formation: Cobalt(II)-Thiourea in Ethyl Acetate, Propanol, Propylene Carbonate

1984 ◽  
Vol 15 (9) ◽  
Author(s):  
U. BIADER CEIPIDOR ◽  
V. CARUNCHIO ◽  
A. M. GIRELLI ◽  
A. MESSINA
1983 ◽  
Vol 75 ◽  
pp. 237-240 ◽  
Author(s):  
Ugo Biader Ceipidor ◽  
Vicenzo Carunchio ◽  
Anna Maria Girelli ◽  
Antonella Messina

1967 ◽  
Vol 20 (9) ◽  
pp. 1815 ◽  
Author(s):  
BG Cox ◽  
PT McTigue

The relative rates of the concurrent A1 and A2 hydrolyses of t-butyl acetate have been measured as a function of solvent composition in water-dimethyl sulphoxide (DMSO) mixtures. A large difference in solvent effect is observed, which correlates well with observed solvent effects on ethyl acetate (A2) and acetal (Al) hydrolyses in the same solvent system. Activity coefficients have been measured for t-butyl acetate, ethyl acetate, and acetal in various water-DMSO mixtures.


2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Rihab Sahli ◽  
Janet Bahri ◽  
Issa Tapsoba ◽  
Khaled Boujlel ◽  
Noureddine Raouafi

Two tetralkylated phenylenediamines (TAPD)1and2have been prepared by reductive alkylation ofpara-dimethylaminoaniline with furfural or thiophene 2-carboxaldehyde, respectively. Their chelation ability has been evaluated as electrochemical guest-responsive chemosensors for Cd(II) in acetonitrile (ACN), dimethylformamide (DMF), propylene carbonate (PC), and nitromethane (NM). The voltamperometric studies showed that these compounds are able to bind the Cd(II) cation with strong affinities except in DMF. The redox features of the chemosensors changed drastically when they are bounded to Cd(II) to undergo important anodic potential peak shifts comprised between ca. 500 and ca. 900 mV depending on the solvent. The addition of ∼4–10% molar triflic acid (TfOH) was found to be necessary to achieve rapidly the cation chelation which is slow without the acid. The electrochemical investigations suggested the formation of 1 : 2 stoichiometry complexes [Cd(L)2]2+. The results are discussed in terms of solvent effects as a competitive electron donating ligand to the cation. The reaction coupling efficiency (RCE) values were determined and were also found to be solvent-dependent.


1999 ◽  
Vol 111 (21) ◽  
pp. 9687-9694 ◽  
Author(s):  
Debarshi Gangopadhyay ◽  
Bichitra Nandi Ganguly ◽  
Tapas Mukherjee ◽  
Binayak Dutta-Roy

2016 ◽  
Vol 18 (7) ◽  
pp. 5129-5138 ◽  
Author(s):  
Shouli Ming ◽  
Zilan Feng ◽  
Daize Mo ◽  
Zhipeng Wang ◽  
Kaiwen Lin ◽  
...  

A new nitrogen analog of 3,4-ethylenedioxythiophene (EDOT), N-methyl-3,4-dihydrothieno[3,4-b][1,4]oxazine (MDTO), was electropolymerized in different solvents (deionized water, acetonitrile, and propylene carbonate) using LiClO4 as the electrolyte.


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