Vibrational spectra and normal vibrations of bromofluorobenzene isomers—I

Varsányi, G.; Holly, S.; Faragó, T.

doi:10.1016/0371-1951(63)80129-0

Cited by 17 publications

(6 citation statements)

References 13 publications

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“…This observation reflects the fact that both crystallite size and crystallinity increase as the thickness increases from 14 to 22 µm. Also, the disturbance of the three dimensional arrangement of their atoms and molecules is less in the case of higher thickness, which means that the thicker samples are characterized by higher crystallite sizes, higher crystallinity and higher ordering 18…”

Section: Resultsmentioning

confidence: 99%

“…For example, the change in the proportion of amorphous and crystalline regions was determined from the change in intensities of the absorption bands at 1299 and 1887 cm −1 or 451, 465 and 1018 cm −1 11. 18–20 X‐ray diffraction, by comparing integrated intensities in the crystal peaks with the integrated intensity from the non‐crystalline regions. Using X‐ray diffraction, Slichter and Mandel21 found a slight change in both the sharpness and spacing of the crystalline pattern for high and low pressure PE irradiated with either fast electrons or radiation.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of gamma irradiated polyethylene films by DSC and X-ray diffraction techniques

et al. 2000

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of gamma irradiated polyethylene films by DSC and X-ray diffraction techniques

et al. 2000

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“…Experimentally, the photodissociation dynamics of monohalobenzenes have been studied in the gas phase by photofragment translational spectroscopy (PTS) − but also in real time by ultrafast pump−probe spectroscopy combined with time-of-flight (TOF). − The effect of substituents on the dissociation dynamics of multihalobenzenes has also been studied by PTS − and by femtosecond spectroscopy. − Quantum chemical calculations of potential energy surfaces have previously been performed for bromo- and chlorobenzene − and, recently, also for dibromobenzenes and 1,3,5-tribromobenzene − …”

Section: Introductionmentioning

confidence: 99%

“…22 Several spectroscopic studies of halobenzenes have also been performed. [23][24][25][26][27][28][29] The main dissociation channel of halobenzenes, following an excitation in the far-UV, has been suggested to involve predissociation from the lowest excited singlet state, a delocalized (ππ*) state, to a triplet antibonding (πσ* or nσ*) state localized on the C-X bond. The strength of the coupling between these states as well as the height of the curve crossing point relative to the excitation energy will to a large extent determine the predissociation rate.…”

Section: Introductionmentioning

confidence: 99%

Photochemistry of Bromofluorobenzenes

et al. 2006

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The photochemistry of low lying excited states of six different fluorinated bromobenzenes has been investigated by means of femtosecond laser spectroscopy and high level ab initio CASSCF/CASPT2 quantum chemical calculations. The objective of the work was to investigate how and to what extent light substituents, position on the benzene ring and number, would influence the dissociation mechanism of bromobenzene. In general, the actual position of a fluorine atom affects the dissociation rate to a less extent than the number of fluorine atoms. A clear connection between a lowering of a repulsive pisigma relative to a bound pipi state and the number of fluorine substituents exists, and the previously suggested model of coupling between dissociation rate and relative location of bound and repulsive state still holds for these molecules. A more elaborate examination of the electronic structure of the excited states in bromobenzenes than previously reported is presented.

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Die Selenonierung von Benzol und einiger seiner Derivate mit Selentrioxid

1971

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Durch Umsetzung von Benzol und einiger winer Ucrivate mit Selentrioxid l a fiussigem Schwefeldioxid entstehen neben Selensaure und kleineren Mengen von Diarylselenonen KZSe02 uberwiegend die Arylselenonsauren RSeO3H (R -C6H5, p-CI --C6H4, p-Br C6H4, H3C--Csll4), die man uber ihre Bariumsalze in guter Ausbeute isolieren kann. -Die dargestellten Selenonierungsprodukte werden auf Grund ihrer Debye-Scherrer-Aufnahmen, Schmelzpunkte, Loslichkeiten und IR-Spektren charakterisiert. Die IR-Spektren der Diarylselenone werden zugeordnet und diskutiert. The Selenonation of Benzene and some of its Derivative9 with Selenium TrioxideThe reaction of benzene and some of its derivatives with selenium trioxide in liquid sulfur dioxide produces mainly arylselenonic acids of the general formula RSc03H (R =--C6H5, p-CI-ChH4, p-Rr -C6H4, H3C -CsH4) together with small amounts of selenic acid and diarylselenones R2Se02. The arylselenonic acids can be isolated in good yields via their barium salts. --The prepared products of selenonation were characterised by Debye-Scherrer diagram,, melting points, solubilities and i.r. spectra. The 1.r. spectra of the diarylselenone~ are discussed.Die Anzahl der bisher bekannten aromatischen Selenonsauren RSeO3H und deren Sal7e 2,3) ist im Vergleich mit der umfangreichen Chemie der aromatischen Sulfonssuren und ihrer Derivate4, sehr klein. Dies ist nicht nur durch die grol3e praktische (1966).

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Vibrational spectra and normal vibrations of bromofluorobenzene isomers—I

Cited by 17 publications

References 13 publications

Characterization of gamma irradiated polyethylene films by DSC and X-ray diffraction techniques

Characterization of gamma irradiated polyethylene films by DSC and X-ray diffraction techniques

Photochemistry of Bromofluorobenzenes

Die Selenonierung von Benzol und einiger seiner Derivate mit Selentrioxid

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