[en] Mean amplitudes of vibration for IOF₅ have been recalculated from known spectroscopic data using the ''Method of the Characteristic Vibrations''. The obtained values are in excellent agreement with those obtained from electron diffraction and microwave measurements and give also a correct picture of the molecular geometry. (author)

[en] F₁₉ and ₁H NMR method has been used to investigate the reactions of iodine pentafluoride with diethylamine and triethylamine in the acetonitrile solution at -20 deg. The reactions are characterized by manifestation of two types of interaction betWeen amine and IF⁵. On the one hand, the amine long-range effects on the molecule of the iodine pentafluoride, resulting in equiValence of fluoride atoms, on the other hand, the formation of IF⁵xAm adducts takes place

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[en] Short note

[en] On the basis of ¹'3C and ¹⁹F NMR data it was ascertained that oxidizing fluorination of 3-iodo-4-methylfurazan with xenon difluoride in the atmosphere of dry argon at 20 Deg C in the absolute acetonitrile solution yields the relevant (difluoro-λ³-indanyl)azole. Potentiality of using the compound prepared as a more selective fluorinating reagent than xenon difluoride is shown

[en] The infrared intensities (and wavenumbers) for the fundamental vibrations of ClF₅, BrF₅, and IF₅ have been predicted, using an atomic polar tensor for the F atom transferred from the CH₃F molecule, together with matrices obtained from the normal coordinate analysis of each molecule. The procedure used in these predictions has been described previously in detail for the prediction of infrared intensities of SF₆ and UF₆. Comparison of the calculated intensities with the experimental spectra of XF₅ molecules reveals that the predicted values are in fairly good agreement with the experimental values. The model and procedure allow prediction of intensities of binary combination and overtone bands as well as fundamental vibrations. The comparison between prediction and experiment is presented in some detail, and some reasons for the (relatively few) apparent discrepancies are discussed

[en] This work contains the results of research on the elimination of the depositions containing uranium from the gas centrifuges operating with the rated frequency can be done using the mixture of halogenfluorids-bromine trifluoride and iodine heptafluoride. (authors)

[en] Electron swarm parameters (the electron drift velocity, the longitudinal diffusion coefficient, the ionization and attachment coefficients and the effective ionization coefficient) in pure CF₃I were measured in the range of E/N over 140-1000 Td. These swarm parameters were analysed using a Boltzmann equation analysis, and a set of electron collision cross sections for the CF₃I molecule was derived so that it was consistent with the measured electron swarm parameters in CF₃I. The present set of electron collision cross sections of CF₃I derived was used to calculate the limiting E/N values in CF₃I-N₂ mixtures to confirm that the results of the calculation agreed well with the recent experimental results.

No abstract available