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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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Journal ArticleDOI
TL;DR: In this article, the authors studied quantitatively how the mixing scheme of acetonitrile aqueous solution has an upper critical solution temperature (UCST) at 272 K at c = 0.38.
Abstract: Acetonitrile aqueous solution has an upper critical solution temperature (UCST) at 272 K at c = 0.38 (c represents the mole fraction of acetonitrile). To study quantitatively how the mixing scheme ...

62 citations

Journal ArticleDOI
TL;DR: The photophysical properties of N-methyl-1,8-naphthalimide (NI) and 4-phenoxy-N-methyl 1,8,naphthamide (4-PNI) are studied by steady-state and time-resolved emission measurements as discussed by the authors.
Abstract: The photophysical properties of N-methyl-1,8-naphthalimide (NI) and 4-phenoxy-N-methyl-1,8-naphthalimide (4-PNI) are studied by steady-state and time-resolved emission measurements. Both absorption and fluorescence spectra are red-shifted when the electron donor phenoxy group (–OPh) is introduced at the C-4 position. Compared to NI, the spectral shift in acetonitrile is 27 and 42 nm for the absorption and fluorescence, respectively. The 4-PNI shows high fluorescence emission in non-polar aprotic solvents that can be ascribed to stabilization of the S1 state. The emission intensity of the 4-PNI decreases by addition of water to dioxane solution, and the fluorescence quenching occurs by combination of dynamic and static contribution ascribed to specific solute–solvent interaction.

62 citations

Journal ArticleDOI
TL;DR: The insoluble materials responsible for the commonly encountered electrode fouling during ferrocene oxidation in incompletely degassed solutions, are a mixture of hydrous iron(III) oxide and the organic polymer poly(cyclopentane-1,3-dione-4,5-diyl).

62 citations

Journal ArticleDOI
TL;DR: The anionic ligand bound to zinc in these derivatives, which serve as an anionic polymerization initiator, was shown to be central to the catalytic copolymerization reaction of CO(2)/epoxide to provide polycarbonates and cyclic carbonates.
Abstract: Several synthetic approaches for the preparation of double metal cyanide (DMC) derivatives of iron(II) and zinc(II) are described. These include (1) metathesis reactions of ZnCl2 or ZnI2 with KCpFe(CN)2CO in aqueous solution, (2) reactions of KCpFe(CN)2CO and its phosphine-substituted analogues with Zn(CH3CN)4(BF4)2 and subsequent displacement of acetonitrile at the zinc centers by the addition of a neutral (phosphine) or anionic (phenoxide) ligand, and (3) reactions of the protonated HCpFe(CN)2(phosphine) complexes with Zn(N(SiMe3)2)2, followed by the addition of phenols. All structures are based on a diamond-shaped planar arrangement of the Fe2(CN)4Zn2 core with various appended ligands at the metal sites. Although attempts to replace the iodide ligands in [CpFe(μ-CN)2PPh3ZnI(THF)]2 with acetate using silver acetate failed, two novel cationic mixed-metal cyanide salts based on the [CpFe(PPh3)(μ-CN)2Zn(NC5H5)]22+ framework were isolated from pyridine solution and their structures were defined by X-ray cr...

62 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023533
20221,074
2021178
2020172
2019229
2018207