Symmetric top spectra were observed for the 20Ne·PF3 and 22Ne·PF3 van der Waals dimers using a Fourier-transform microwave spectrometer. The center-of-mass distance between Ne and PF3 is 3.373(3) Å. The experimental data, in conjunction with the van der Waals radii of the atoms and with ab ini...
The quadrupole moment, rotational g factor and magnetisability tensors of PF3 were calculated at the SCF/CHF level in a basis of Gaussian functions, giving values (in au) of Θ = 0.561; χ∥ = − 17.687; χtT = − 14.451; g∥ = 0.0719; g∥ origin at the centre of mass). Electron correlation (estim...
Reflection loss of silicon solar cells can be reduced by texturing the surfaces. We investigated the texturization process for crystalline Si solar cells using chlorine trifluoride (ClF3) gas treatments. Reflectance of textured surfaces was reduced to below 10% at the wavelength of 600 nm. Howev...
Facile oxidations of phosphorus trifluoride occur yielding a pentavalent phosphorus compound upon reaction with iodine monochloride, nitryl chloride, iodic acid and periodic acid. Reactions with sodium and potassium nitrites yield phosphoryl fluoride as a primary reaction product which further r...
The gas phase reaction between boroxine and phosphorus trifluoride has been studied and shown to proceed as: B3O3H3(g) + PF3(g) → BH3PF3(g) + B2O3(s). Rate date obtained using an i.r. absorbance technique show a first order dependence on boroxine.A mechanism is suggested. Phosphorus trifluoride...
The argon-PF3 complex has been prepared in a supersonic expansion of Ar (98%) and PF3 (2%). A Fourier-transform micro-wave spectrometer employing a Fabry-Pérot cavity was used to assign 28 rotational transitions. The rotational constants (MHz) and distortion constants (kHz) were A = 7332.468(10...
The formation of positive and negative ions resulting from the electron bombardment of phosphorus trifluoride and difluorocyanophosphine has been studied as a function of the electron energy. Appearance potentials have been measured for these ions and various inoisation process suggested to expl...
The rotational spectrum of the weak complex between krypton and phosphorus trifluoride has been observed using a Fourier transform microwave spectrometer with a pulsed supersonic nozzle molecular beam source. The complex is an asymmetric top. The distance rcm between the krypton atom and the cen...
Phosphorus trifluoride and thiophosphoryl fluoride both react smoothly with iodine monochloride at room temperature to form dichlorotrifluorophosphorane. The oxidants, nitryl chloride, iodic acid and periodic acid undergo reduction to nitrosyl chloride and iodine respectively, oxidising the phos...
Thanks to recent high-resolution Fourier transform infrared (FTIR) and pure rotational (RF/CM/MMW) measurements, several experimental values of the rotation–vibration parameters of the oblate molecule PF3 have been extracted, contributing thus to the knowledge of the molecular potential of phos...
The FT-Raman and FT-IR spectra for benzenesulfonic acid methyl ester (BSAME) have been recorded in the region 4000–100 cm−1 and compared with the harmonic vibrational frequencies calculated using DFT (LSDA, B3LYP, B3PW91 and MPW1PW91) method by employing 6-311G (d, p) basis set with appropriate...
A convergent, stereocontrolled synthesis of (3S, 4S, 5E, 7E)-3-amino-8-(4-bromophenyl)-4-hydroxy-6-methyl-5,7-octadienoic acid (Aboa, 2), a constituent of theonellamide F from a marine sponge, has been achieved. The key steps include the carboalumination of the enyne 5a, the formation of the ate...
4-Bromophenyl acetate can readily be separated in pure form from industrial distillation residues (obtained after bromination of phenyl acetate with bromine) by selective sorption into ZSM-5 from a cyclohexane solution of the residues and subsequent desorption with acetone.
A practical synthesis of ortho-silyl-substituted phenol from ortho-bromophenyl silyl ethers without using RLi is described. Various ortho-bromophenyl silyl ethers are treated with commercially available Mg turnings, which are easy to handle in air, and transfer of the silyl group to the ortho-po...
The combination of 0 valent palladium precursor and bromo-substituted 1,3-diaryl-imidazoline carbene ligand precursor such as 1-(2-bromophenyl)-3-(2,6-diisopropylphenyl)-imidazolinium chloride 1a exhibited high catalytic activity for the 1,2-addition of arylboronic acids to aldehydes including a...
2-bromo-cyclohexenecarbaldehyde and 2-bromobenzaldehyde have long been used as an important tool for the construction loads of compounds of potential biological, medicinal as well as material applications. This review highlights past ten years advancement in the progressive field of bromovinyl a...
A Suzuki reaction of a diiodo monobromo quinquephenylene with an aryl boronic acid is described. With PEPPSI-IPr as catalyst the threefold coupling product is mainly obtained although only two equivalents of the boronic acid are used. This shows that the intramolecular palladium transfer is favo...
The molecular structure and spectroscopic properties of 1,4-diiodo-2,3,5,6-tetraarylbenzene and 1,4-bis(4-bromophenyl)-2,3,5,6-tetraarylbenzene have been investigated by density functional theory (DFT), 1H NMR, 13C NMR, IR spectroscopy, and elemental analysis. These compounds are the precursors ...
Sulfanyl radical addition–cyclization–elimination of diallylamines in the presence of thiophenol and AIBN gave the 2,3,4-trisubstituted pyrrolidine in high yield. This reaction was extended to a radical cyclization using a catalytic amount of thiophenol. A successful application was demonstrat...
3-Sulfanylpropionic acids are obtained in excellent yields by proceeding through a simple, mild, and efficient procedure utilizing tetrabutylammonium fluoride (TBAF) as catalyst.
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