NMR Spectroscopic Characterization of Adinazolam Mesylate: pH-Dependent Structure Change in Aqueous Solution and Active Methylene

1995 ◽  
Vol 84 (6) ◽  
pp. 786-790 ◽  
Author(s):  
Minoru Ogata ◽  
Tsutomu Tahara ◽  
Toshihide Nishimura
Keyword(s):  
Aqueous Solution ◽  
Spectroscopic Characterization ◽  
Structure Change ◽  
Adinazolam Mesylate ◽  
Ph Dependent ◽  
Active Methylene

Structural and IR-spectroscopic characterization of magnesium acesulfamate

2016 ◽  
Vol 71 (1) ◽  
pp. 51-55 ◽  
Author(s):  
Oscar E. Piro ◽  
Gustavo A. Echeverría ◽  
Beatriz S. Parajón-Costa ◽  
Enrique J. Baran
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Elemental Analysis ◽  
Spectroscopic Characterization ◽  
Magnesium Carbonate ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
X Ray ◽  
Ir Spectroscopic

AbstractMagnesium acesulfamate, Mg(C4H4NO4S)2·6H2O, was prepared by the reaction of acesulfamic acid and magnesium carbonate in aqueous solution, and characterized by elemental analysis. Its crystal structure was determined by single crystal X-ray diffraction methods. The substance crystallizes in the triclinic space group P1̅ with one molecule per unit cell. The FTIR spectrum of the compound was also recorded and is briefly discussed. Some comparisons with other simple acesulfamate and saccharinate salts are also made.

Mechanistic insights into pH-dependent hydrogen electrocatalysis by flipping interfacial water

2021 ◽  
Author(s):  
Qiang Sun ◽  
Nicholas Oliveira ◽  
Sergiy Tyukhtenko ◽  
Jason Guo ◽  
Nathalie Myrthil ◽  
...  
Keyword(s):  
Spectroscopic Characterization ◽  
Grand Challenge ◽  
Interfacial Water ◽  
Oxidation Reactions ◽  
Acid And Base ◽  
Ph Dependent ◽  
Exchange Membrane ◽  
Kinetics Of

A grand challenge in electrochemistry is to understand and promote electrochemical processes by exploring and exploiting the interface. Herein, we promoted the hydrogen evolution and oxidation reactions (HER/HOR) of platinum in base by employing N-methylimidazoles to reorientate interfacial water against the interfacial electric field as evidenced by in situ spectroscopic characterization of the interface. We accordingly established a unified mechanism by which the HER/HOR in acid and base proceeds via diffusion of proton and hydroxide, respectively, through interface via interfacial water by the Grotthuss mechanism. This mechanism accounts for the pH-dependent HER/HOR kinetics of platinum, a long-standing puzzle. Furthermore, we demonstrated 40% performance improvement of an anion exchange membrane electrolyzer by adding 1,2-dimethylimidazole into the alkaline solution fed into its Pt cathode.

Droplet based microfluidics: spectroscopic characterization of levofloxacin and its SERS detection

2015 ◽  
Vol 17 (33) ◽  
pp. 21236-21242 ◽  
Author(s):  
I. J. Hidi ◽  
M. Jahn ◽  
K. Weber ◽  
D. Cialla-May ◽  
J. Popp
Keyword(s):  
Aqueous Solution ◽  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Spectroscopic Characterization ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection

The determination of the absorption behavior of levofloxacin (levaquin) on the surface of silver nanoparticles and its determination in aqueous solution by droplet based microfluidics combined with surface enhanced Raman spectroscopy.

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