Studies of vacuum pyrolysis of 3-sila- and 3-germa-3,3?-spirobi(6-oxabicyclo[3.1.0]hexanes) and low-temperature matrix stabilization of monomeric silicon dioxide from the gas phase

1993 ◽  
Vol 42 (4) ◽  
pp. 663-671 ◽  
Author(s):  
S. E. Boganov ◽  
V. I. Faustov ◽  
V. N. Khabashesku ◽  
Z. A. Kerzina ◽  
N. D. Kagramanov ◽  
...  
Keyword(s):  
Low Temperature ◽  
Silicon Dioxide ◽  
Gas Phase ◽  
Matrix Stabilization ◽  
Vacuum Pyrolysis ◽  
Temperature Matrix

ChemInform Abstract: Direct Study of Unstable Dimethylgermathione, Me2Ge=S, by Vacuum Pyrolysis-MS and Low-Temperature Matrix IR Spectroscopy.

ChemInform ◽  
2010 ◽  
Vol 22 (18) ◽  
pp. no-no
Author(s):  
V. N. KHABASHESKU ◽  
S. E. BOGANOV ◽  
P. S. ZUEV ◽  
O. M. NEFEDOV ◽  
J. TAMAS ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ir Spectroscopy ◽  
Direct Study ◽  
Vacuum Pyrolysis ◽  
Temperature Matrix ◽  
Matrix Ir Spectroscopy

scholarly journals Laser-Induced-Fluorescence Spectrum of the CNN Molecule

1988 ◽  
Vol 9 (4-6) ◽  
pp. 359-368 ◽  
Author(s):  
M. C. Curtis ◽  
A. P. Levick ◽  
P. J. Sarre
Keyword(s):  
Low Temperature ◽  
Gas Phase ◽  
Fluorescence Spectra ◽  
Laser Excitation ◽  
Band System ◽  
Laser Induced Fluorescence ◽  
Rotational Spectrum ◽  
Spin Orbit ◽  
Electronic Band ◽  
Temperature Matrix

We have recorded a laser excitation spectrum of the A3Π–X3Σ− electronic band system of the CNN radical in the gas phase, at a resolution of ca. 0.8 cm−1. The rotational branch structure of the vibrational band near 419 nm has been simulated and molecular parameters are obtained. The results are compared with data from laser-induced-fluorescence spectra of CNN trapped in a low-temperature matrix. A revised value for the spin-orbit parameter in the A3Π state is obtained and comparison is made with the values for related molecules. The possible detection of CNN in astrophysical sources is considered and the general features of its rotational spectrum in the ground electronic state are described.

Conformational behaviour, photochemistry and flash vacuum pyrolysis of a 2-(1H-tetrazol-1-yl)thiophene

2017 ◽  
Vol 41 (24) ◽  
pp. 15581-15589 ◽  
Author(s):  
Maria I. L. Soares ◽  
Cláudio M. Nunes ◽  
Clara S. B. Gomes ◽  
Teresa M. V. D. Pinho e Melo ◽  
Rui Fausto
Keyword(s):  
Infrared Spectroscopy ◽  
Low Temperature ◽  
Theoretical Calculations ◽  
Matrix Isolation ◽  
Flash Vacuum Pyrolysis ◽  
Fused Heterocycles ◽  
Vacuum Pyrolysis ◽  
Temperature Matrix ◽  
Photochemical Behaviour

The conformational and photochemical behaviour of a 2-(1H-tetrazol-1-yl)thiophene was studied using low-temperature matrix isolation infrared spectroscopy and theoretical calculations. FVP of 2-(1H-tetrazol-1-yl)thiophene afforded new thieno-fused heterocycles.

Flash vacuum pyrolysis of anthracenic Diels–Alder adducts, a convenient source of methanethial and methanethial S-oxide

1987 ◽  
Vol 65 (2) ◽  
pp. 290-291 ◽  
Author(s):  
Yannick Vallee ◽  
Jean-Louis Ripoll ◽  
Christophe Lafon ◽  
Geneviève Pfister-Guillouzo
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Low Temperature ◽  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Diels Alder ◽  
Flash Vacuum Pyrolysis ◽  
Vacuum Pyrolysis ◽  
Nuclear Magnetic

The flash vacuum pyrolysis of Diels–Alder adducts of anthracene constitutes a rapid and selective route to methanethial 1 and methanethial S-oxide 2, as analyzed in the gas phase by photoelectron spectroscopy. Low temperature infrared and nuclear magnetic resonance (1H, 13C) spectra are also reported for sulfine 2.

Direct study of unstable dimethylgermathione, Me2GeS, by vacuum pyrolysis-MS and low temperature matrix IR spectroscopy

1991 ◽  
Vol 402 (2) ◽  
pp. 161-169 ◽  
Author(s):  
V.N. Khabashesku ◽  
S.E. Boganov ◽  
P.S. Zuev ◽  
O.M. Nefedov ◽  
J. Tamás ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ir Spectroscopy ◽  
Direct Study ◽  
Vacuum Pyrolysis ◽  
Temperature Matrix ◽  
Matrix Ir Spectroscopy

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

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