scholarly journals Infrared Spectra of Gas-Phase V+−(Benzene) and V+−(Benzene)2Complexes

2002 ◽  
Vol 124 (8) ◽  
pp. 1562-1563 ◽  
Author(s):  
D. van Heijnsbergen ◽  
G. von Helden ◽  
G. Meijer ◽  
P. Maitre ◽  
M. A. Duncan
Keyword(s):  
Gas Phase ◽  
Infrared Spectra

scholarly journals Preparation and the Microwave and Infrared Spectra of Vinyl Ketene

1979 ◽  
Vol 34 (11) ◽  
pp. 1269-1274 ◽  
Author(s):  
Erik Bjarnov
Keyword(s):  
Dipole Moment ◽  
Gas Phase ◽  
Infrared Spectra ◽  
Room Temperature ◽  
Normal Modes ◽  
Spectroscopic Constants ◽  
Electrical Dipole ◽  
Electrical Dipole Moment ◽  
Vacuum Pyrolysis ◽  
Modes Of Vibration

Vinyl ketene (1,3-butadiene-1-one) has been synthesized by vacuum pyrolysis of 3-butenoic 2-butenoic anhydride. The microwave and infrared spectra of vinyl ketene in the gas phase at room temperature have been studied. The trans-rotamer has been identified, and the spectroscopic constants were found to be Ã= 39571(48) MHz, B̃ = 2392.9252(28) MHz, C̃ = 2256.0089(28) MHz, ⊿j = 0.414(31) kHz, and ⊿JK = - 34.694(92) kHz. The electrical dipole moment was found to be 0.987(23) D with μa = 0.865(14) D and μb = 0.475(41) D. A tentative assignment has been made for 17 of the 21 normal modes of vibration

scholarly journals IR photofragmentation of the phenyl cation: spectroscopy and fragmentation pathways

2021 ◽  
Vol 23 (7) ◽  
pp. 4334-4343
Author(s):  
Sandra D. Wiersma ◽  
Alessandra Candian ◽  
Joost M. Bakker ◽  
Giel Berden ◽  
John R. Eyler ◽  
...  
Keyword(s):  
Gas Phase ◽  
Spectral Range ◽  
Infrared Spectra ◽  
Fragmentation Pathways ◽  
Phenyl Cation

We present the gas-phase infrared spectra of the phenyl cation, phenylium, in its perprotio (C6H5+) and perdeutero (C6D5+) forms, in the 260–1925 cm−1 (5.2–38 μm) spectral range, and investigate the observed photofragmentation.

Gas phase infrared spectra and corresponding DFT calculations of , -diphenylpolyenes

2010 ◽  
Vol 259 (1) ◽  
pp. 11-15 ◽  
Author(s):  
Lars Biemann ◽  
Michaela Braun ◽  
Karl Kleinermanns
Keyword(s):  
Dft Calculations ◽  
Gas Phase ◽  
Infrared Spectra

Infrared spectra of homogeneous and heterogeneous proton-bound dimers in the gas phase

2005 ◽  
Vol 7 (14) ◽  
pp. 2747 ◽  
Author(s):  
Travis D. Fridgen ◽  
Luke MacAleese ◽  
Philippe Maitre ◽  
Terry B. McMahon ◽  
Pierre Boissel ◽  
...  
Keyword(s):  
Gas Phase ◽  
Infrared Spectra

scholarly journals THE USE OF INFRARED SPECTROPHOTOMETRY FOR THE ESTIMATION OF SMALL QUANTITIES OF SOME HALOGENATED HYDROCARBONS

1953 ◽  
Vol 31 (4) ◽  
pp. 328-337 ◽  
Author(s):  
L. Breitman ◽  
E. W. R. Steacie
Keyword(s):  
Quantitative Analysis ◽  
Carbon Tetrachloride ◽  
Gas Phase ◽  
Infrared Spectra ◽  
Methyl Chloride ◽  
Ternary Mixtures ◽  
Halogenated Hydrocarbons ◽  
Infrared Spectrophotometry ◽  
Absorption Bands ◽  
Binary And Ternary Mixtures

The infrared spectra of chloral, carbon tetrachloride, and chloroform have been determined between 1500 and 650 cm.−1 over a range of pressures in the gas phase. Absorption bands suitable for the quantitative analysis of binary and ternary mixtures of the components have been selected and their peak intensities shown to obey Beer's Law over the range of pressures studied. Ternary mixtures have been analyzed from the spectra with an accuracy of about 20%.The spectra of dichloromethane and methyl chloride have also been measured under comparable conditions.

Room Temperature Gas Phase Infrared Spectra of H-bonded Oligomers of Methanol

2020 ◽  
Vol 106 ◽  
pp. 102981
Author(s):  
Bedabyas Behera ◽  
Shubhadip Chakraborty
Keyword(s):  
Gas Phase ◽  
Infrared Spectra ◽  
Room Temperature

Hydrogen bonding in the gas phase: the thermodynamic properties of hydrogen fluoride-ether complexes and their far infrared spectra

1971 ◽  
Vol 322 (1548) ◽  
pp. 137-146 ◽  
Keyword(s):  
Hydrogen Bonding ◽  
Gas Phase ◽  
Infrared Spectra ◽  
Equilibrium Constants ◽  
Far Infrared ◽  
Methyl Ethyl ◽  
Rotational Contour ◽  
Stretching Vibration ◽  
Conformational Rearrangements ◽  
Far Infrared Spectra

The equilibrium constants of gas-phase complexes of HF with dimethyl, methyl ethyl and diethyl ether have been measured at several temperatures using the Benesi-Hildebrand approximation on the absorption band of the HF stretching vibration in the complex. From these, values of Δ H of — 43, — 38 and — 30 kJ mol -1 respectively, have been determined. They are interpreted in terms of conformational rearrangements of the ethers when they form hydrogen bonds. The far infrared spectra of the complexes with both HF and DF have also been recorded and in each case a band observed at around 180 cm -1 which is assigned to the intermolecular stretching mode of vibration. For the complex between HF and dimethyl ether a rotational contour has been observed at about 10 cm -1 .

Gas-phase infrared spectra of bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato)[18O]dioxouranium(VI)

1981 ◽  
Vol 85 (9) ◽  
pp. 1274-1276 ◽  
Author(s):  
A. Ekstrom ◽  
H. J. Hurst ◽  
C. H. Randall ◽  
H. J. Loeh
Keyword(s):  
Gas Phase ◽  
Infrared Spectra

Chalcogenide-Halides of Niobium (V). 1. Gas-Phase Structures of NbOBr3, NbSBr3, and NbSCl3. 2. Matrix Infrared Spectra and Vibrational Force Fields of NbOBr3, NbSBr3, NbSCl3, and NbOCl3

2003 ◽  
Vol 42 (4) ◽  
pp. 1296-1305 ◽  
Author(s):  
Izabela Nowak ◽  
Elizabeth M. Page ◽  
David A. Rice ◽  
Alan D. Richardson ◽  
Richard J. French ◽  
...  
Keyword(s):  
Gas Phase ◽  
Infrared Spectra ◽  
Force Fields ◽  
Phase Structures

Standard free energy of the equilibrium between the trans-monomer and the cyclic-dimer of acetic acid in the gas phase from infrared spectroscopy

2015 ◽  
Vol 17 (11) ◽  
pp. 7477-7488 ◽  
Author(s):  
Manuel Goubet ◽  
Pascale Soulard ◽  
Olivier Pirali ◽  
Pierre Asselin ◽  
Florent Réal ◽  
...  
Keyword(s):  
Free Energy ◽  
Acetic Acid ◽  
Infrared Spectroscopy ◽  
Gas Phase ◽  
Infrared Spectra ◽  
Standard Free Energy ◽  
Cyclic Dimer

The dimerization equilibrium of acetic acid in the gas phase at 298 K has been characterized from the analysis of jet-cooled and static cell infrared spectra supported by calculations.

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