Topic
Acetonitrile
About: Acetonitrile is a research topic. Over the lifetime, 11298 publications have been published within this topic receiving 175275 citations. The topic is also known as: cyanomethane & ethyl nitrile.
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TL;DR: Calibration data were obtained that are independent of the nature of the reference electrode and allow the water content of the solvents to be calculated by performing a single voltammetric scan in the presence of VK(1) and 0.2 M supporting electrolyte (Bu(4)NPF(6)).
Abstract: Voltammetry experiments were performed on the natural quinone, vitamin K1 (VK1), in a range of organic solvents of varying dielectric constant that are commonly used for electrochemical measurements [dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF), acetonitrile (MeCN), propionitrile (EtCN), butyronitrile (PrCN), 1,2-dichloroethane (DCE), dichloromethane (DCM), and 1,1,2,2-tetrachloroethane (TCE)]. The water content of the solvents was accurately measured using Karl Fischer (KF) coulometric titrations, and the voltammetric data were used to estimate the degree of hydrogen-bonding interactions between the reduced forms of VK1 and variable levels of water, thereby allowing a ranking of water−substrate interactions in the different solvents. The voltammetric data were analyzed based on interactions that occur between reduced forms of VK1 and the water, the solvent, and the supporting electrolyte. Calibration data were obtained that are independent of the nature of the reference electrode and allow the ...
54 citations
TL;DR: The mechanism for nitrogen including the structure of carbon nanofibers through the catalysis was discussed on the basis of the results.
Abstract: Carbon nanofibers containing a range of nitrogen contents of 1−10 atom % were directly synthesized by catalytic chemical vapor deposition over nickel-based catalysts at 350−600 °C using acetonitrile and acrylonitrile. The nitrogen content was controlled by careful choice of the reaction conditions. The N-doped carbon nanofibers showed herringbone structure with 20−60 nm diameter. X-ray photoelectron spectroscopy was applied to examine the chemical state of nitrogen in carbon nanofibers. Structural features of N-doped carbon nanofibers were examined in X-ray diffraction and electron microscopy. The mechanism for nitrogen including the structure of carbon nanofibers through the catalysis was discussed on the basis of the results.
54 citations
TL;DR: In this article, the reaction of phenylselenenyl chloride with olefins in aqueous acetonitrile affords β-hydroxyalkyl phenyl selenides in excellent yields.
54 citations
TL;DR: In this paper, a rhodamine- azacrown derivative (2-(1,4-dioxa-7,13-dithia-10-azacyclo- pentadecan-10yl)ethyl)-3′,6′-bis(diethyl amino)spiro[isoindoline-1,9′-xanthen]-3-one) responded to Al 3+ and Fe 3+ in ethanol-water solutions (20/80, v/v, pH = 7.0).
54 citations
TL;DR: In this article, the Mole fraction equilibrium solubility of nicotinic acid in six solvents (water, ethanol, dimethyl sulfoxide, acetone, acetonitrile and diethyl ether) was determined over the temperature range (283 to 333) K, using the gravimetric method.
54 citations