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: In this article, the authors used laser flash photolysis with time-resolved infrared detection of transients (LFP-TRIR) to study the IR spectroscopy and reactivity of a number of substituted ketenes.
Abstract: Laser flash photolysis with time-resolved infrared detection of transients (LFP-TRIR) has been used to study the IR spectroscopy and reactivity of a number of substituted ketenes, prepared by the 308-nm photolysis of α-diazocarbonyl precursors in acetonitrile solution at room temperature. The correlation of the experimental ketene asymmetric stretching frequency to the Swain−Lupton field (F) and resonance (R) effect substituent parameters was unsatisfactory, whereas the correlation to the inductive substituent parameter (σI) of Charton gave excellent results. This suggests that the asymmetric stretching frequency of substituted ketenes depends mainly on the inductive (i.e., field) effect of the substituents. The mechanism and kinetics of the reactions of these ketenes with various amines in acetonitrile were also studied. An intermediate species identified as either zwitterionic ylide or amide enol formed in the nucleophilic addition of the secondary amine to the Cα of the ketene is observed by TRIR. The ...
66 citations
TL;DR: Three copper(II) Schiff-base complexes, [Cu(L1)(H2O)](ClO4) (1), [cu(L2)] (2) and [Cu (L3)] (3), have been synthesized and characterized by single crystal X-ray diffraction analysis.
66 citations
66 citations
TL;DR: The results suggest that, depending on the substrates, the adapted mixed culture can develop very different degradation pathways, such as nitrile hydratase plus amidase for acetonitrile or acrylonitrile and nitrilase for benzonitrile.
66 citations
TL;DR: In this paper, the Stokes shift of coumarin 153 was measured for a series of acetonitrile/propylene carbonate binary mixtures at room temperature and the solvent reorganization energy is independent of composition in this mixture.
66 citations