Structure diversity of silver(I) [1,1′-bis(diphenylphosphino)cobaltocenium] complexes: Effect of counteranions
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Extraction of organic impurities using 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF 6 ] Extraction of several chloro compounds from water has been examined. As the extracting liquid the 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF 6 ], which is common hydrophobic ionic liquid, was used. Additionally, extraction of selected chlorinated compounds from tert-butylmethylether (MTBE) was investigated. The obtained results show the usefulness of [BMIM][PF 6 ] to remove the organic impurities from water, particularly at the concentration range inappropriate for biological purification plants.
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Abstract P 1‐Butyl‐3‐methylimidazolium tetrafluoroborate 1‐Butyl‐3‐methylimidazolium hexafluorophosphate R 1‐Butyl‐3‐methylimidazolium chloride Potassium hexafluorophosphate P 1‐Butyl‐3‐methylimidazolium hexafluorophosphate
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Treatment of SrI2 with 2 equivalents of K[P3C2But2] affords the hexaphosphastrontocene [{Sr(η5-P3C2But2 )2}∞] which is polymeric in the solid state; treatment of this complex with an excess of pyrazine leads to the corresponding Lewis base adduct [{Sr(η5-P3C2But2 )2(μ-C4H4N2)} ∞] which is also polymeric in the solid state.
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Photoinduced electron transfer in two room-temperature ionic liquids, 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM-PF(6)) and 1-octyl-3-methylimidazolium hexafluorophosphate (OMIM-PF(6)), has been investigated using steady-state fluorescence quenching of 9,10-dicyanoanthracene with a series of single electron donors. From these fluorescence quenching rates, reorganization energy (lambda) values and k(diff) values can be derived from a Rehm-Weller analysis. In many cases, these fluorescence quenching reactions occur at rates larger than what would be expected based on the Smoluchowski equation. In addition, lambda values of 10.1 kcal/mol and 16.3 kcal/mol for BMIM-PF(6) and OMIM-PF(6), respectively, have been determined.
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Six PF6-based ionic liquids (ILs) were investigated to evaluate their potential as chemicals for enhancing fire and termite resistance of wood. The ILs used in this study included 1-methyl-1-propylpyrrolidinium hexafluorophosphate ([MPPL]PF6), 1-methyl-1-propylpiperidinium hexafluorophosphate ([MPPR]PF6), 1-ethyl-3-methylimidazolium hexafluorophosphate ([EMIM]PF6), tetrabutylphosphonium hexafluorophosphate ([TBP]PF6), trihexyltetradecylphosphonium hexafluorophosphate ([THP]PF6), and 1-butylpyridinium hexafluorophosphate ([BPYR]PF6). All of the IL-treated wood samples did not undergo any morphological changes, and exhibited enhanced fire- and termite resistance compared with untreated wood. The fire resistance properties of all of the prepared IL-treated wood specimens were comparable. However, the [EMIM]PF6- and [THP]PF6-treated wood showed slightly inferior termite resistance among the tested IL-treated woods. Overall, [TBP]PF6 was the most promising candidate among the evaluated PF6-based ILs because it is stable in wood without leaching after water penetration.
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Synthesis of diaryliodonium salts from aromatics and potassium iodate was investigated by means of orthogonal and single factor methods.Results showed that the yields of diphenyl iodonium hexafluorophosphate,dimethylphenyl iodonium hexafluorophosphate,di-tert-butyl phenyl iodonium hexafluorophosphate and bisdodecylphenyl iodonium hexafluorophosphate reached 52.7%,63.6%,68.7% and 45.9%,respectively.All the products were confirmed with liquid chromatography,LC-MS and NMR.
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The viscosities of 1-hexyl-3-methylimidazolium hexafluorophosphate ([hmim][PF6]) and 1-octyl-3-methylimidazolium hexafluorophosphate ([omim][PF6]) were measured with a rolling ball viscometer. The experimental temperatures were from (293.15 to 353.15) K and pressures were up to 20.0 MPa. The experimental values were correlated with a Vogel−Tamman−Fulcher (VTF) equation and a Tait-form equation.
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