Infrared characterization of the products and the rate coefficient of the reaction between Criegee intermediate CH2OO and HCl

2021 ◽  
Author(s):  
Wei-Che Liang ◽  
Pei-Ling Luo ◽  
Yuan-Pern Lee
Keyword(s):  
Fourier Transform ◽  
Rate Coefficient ◽  
Urban Atmosphere ◽  
Rate Coefficients ◽  
Fourier Transform Spectrometer ◽  
Hydrogen Halides ◽  
Criegee Intermediates

Reactions between Criegee intermediates and hydrogen halides might be significant, particularly in the polluted urban atmosphere, because of their large rate coefficients. Employing a Fourier-transform spectrometer in a step-scan mode...

scholarly journals Infrared characterization of formation and resonance stabilization of the Criegee intermediate methyl vinyl ketone oxide

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Chen-An Chung ◽  
Yuan-Pern Lee
Keyword(s):  
High Pressure ◽  
Fourier Transform ◽  
Reaction Mechanism ◽  
Vinyl Ketone ◽  
Methyl Vinyl Ketone ◽  
Fourier Transform Spectrometer ◽  
Methyl Vinyl ◽  
Criegee Intermediates ◽  
Resonance Stabilization

AbstractMethyl vinyl ketone oxide (MVKO) is an important Criegee intermediate in the ozonolysis of isoprene. MVKO is resonance stabilized by its allyl moiety, but no spectral characterization of this stabilization was reported to date. In this study, we photolyzed a mixture of 1,3-diiodo-but-2-ene and O2 to produce MVKO and characterized the syn-trans-MVKO, and tentatively syn-cis-MVKO, with transient infrared spectra recorded using a step-scan Fourier-transform spectrometer. The O‒O stretching band at 948 cm−1 of syn-trans-MVKO is much greater than the corresponding bands of syn-CH3CHOO and (CH3)2COO Criegee intermediates at 871 and 887 cm−1, respectively, confirming a stronger O‒O bond due to resonance stabilization. We observed also iodoalkenyl radical C2H3C(CH3)I upon photolysis of the precursor to confirm the fission of the terminal allylic C‒I bond rather than the central vinylic C‒I bond of the precursor upon photolysis. At high pressure, the adduct C2H3C(CH3)IOO was also observed. The reaction mechanism is characterized.

scholarly journals The POLARBEAR Fourier transform spectrometer calibrator and spectroscopic characterization of the POLARBEAR instrument

2019 ◽  
Vol 90 (11) ◽  
pp. 115115 ◽  
Author(s):  
F. Matsuda ◽  
L. Lowry ◽  
A. Suzuki ◽  
M. Aguilar Fáundez ◽  
K. Arnold ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Spectroscopic Characterization ◽  
Fourier Transform Spectrometer

scholarly journals Systematic characterization of the Herschel SPIRE Fourier Transform Spectrometer★

2015 ◽  
Vol 449 (3) ◽  
pp. 2274-2303 ◽  
Author(s):  
R. Hopwood ◽  
E. T. Polehampton ◽  
I. Valtchanov ◽  
B. M. Swinyard ◽  
T. Fulton ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Spectrometer

scholarly journals Characterization of superconducting NbTiN films using a dispersive Fourier transform spectrometer

2021 ◽  
Vol 119 (15) ◽  
pp. 152601
Author(s):  
B. N. R. Lap ◽  
A. Khudchenko ◽  
R. Hesper ◽  
K. I. Rudakov ◽  
P. Dmitriev ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Spectrometer
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