FT—IR spectrum of the benzoic acid—containing LDH showed the presence 4 carboxylate ion. These implied that the protonic organic compounds on LDH containing~the strong ba~ anions are intercalated as organic anions its interstitial and thus alkylation are accelerated.Hiroshi Shimada...
alkyl halide卤代烷;烷基卤;烷基卤化物 英语例句库 1.The application ofalkyldithiophosphate accelerator in NR based tread compound was investigated. 研究烷基二硫代磷酸盐促进剂在NR胎面胶中的应用。 2.Ingredients:alkylindican, cucumber extract, VC, etc. ...
Halide substituents have a minor effect on the position of absorption and emission bands: the spectra shift bathochromically in the row 5d (F) – 5e (H) – 5b (Cl) – 5c (Br). It should be noted that the alkyl substituent in case of 5e and other dyes is not identical (methyl and...
Other works21,22 have utilized mixtures of metal halides and thiourea instead of single molecule precursors, however, it is unclear what happens to the halide anions or thiourea decomposition prod- ucts after the metal sulfides are formed. Thus, molecular precursors which decompose by a well-...
The IR spectra of compounds 4–7 exhibited the presence of broad band: at 3234–3537 cm−1 corresponding to NH groups, at 1660–1680 cm−1 corresponding to alkyl groups. The 1H-NMR spectrum, for example, of compound 4a–c revealed the presence of a broad band at 10.60–11.03 ppm ...
The crude product was purified by chromatography on silica gel, eluting with toluene:ethyl acetate (90:10) to give 1.1 g of pure product as an oil, which was characterized by TLC, IR, H-- and F--NMR and mass spectrum. Mass Spectrum: Calcd. for C18 H13 F5 N2 : 352. Found: 352...
Compounds of formula I wherein R2is alkyl may be prepared from compounds IV, V, VI or VII by treating I with a base such as sodium hydride and an alkyl halide (Hal-Alkyl) in the presence of an inert organic solvent such as tetrahydrofuran and dimethylformamide, to form compounds of the...
1-Alkyl-3-Methylpyridinium Halide Structural Features Studied by Vibrational Spectroscopic MethodsIonic LiquidVibrational SpectrumPyridinium RingAlkyl SubstituentGaussian CurfA series of ionic liquids based on 1-alkyl-3-methylpyridinium halides were studied by Raman and IR spectroscopy. Results from calculations...
The α-iodo oximes (or ketones) have previously been prepared in a separate step by the classical Finkelstein reaction (iodide-halide exchange) and are preferred starting materials because of their selective, rapid reactivity towards trialkyl phosphite. In the reaction of the halogenated ketones, ...
FIG. 3 shows 1H-NMR spectrum of a silazane compound obtained in Example 2; and FIG. 4 shows IR spectrum of the silazane compound obtained in Example 2. DESCRIPTION OF THE PREFERRED EMBODIMENTS The silazane compound having two fluoroalkyl groups according to the present invention is represented...