Gas-Phase Retro-Diels–Alder Reactions of Cyclohexene, 1-Methylcyclohexene, and 4-Methylcyclohexene following Photoexcitation at 193 nm: A Velocity-Map Imaging Study

2015 ◽  
Vol 119 (50) ◽  
pp. 12218-12223 ◽  
Author(s):  
Sara H. Gardiner ◽  
M. Laura Lipciuc ◽  
Claire Vallance
Keyword(s):  
Gas Phase ◽  
Imaging Study ◽  
Diels Alder ◽  
Velocity Map Imaging ◽  
193 Nm

Velocity-map imaging study of the O(3P)+N2 product channel following 193 nm photolysis of N2O

2003 ◽  
Vol 119 (2) ◽  
pp. 771-780 ◽  
Author(s):  
M. Brouard ◽  
A. P. Clark ◽  
C. Vallance ◽  
O. S. Vasyutinskii
Keyword(s):  
Imaging Study ◽  
Velocity Map Imaging ◽  
193 Nm

scholarly journals A velocity-map imaging study of methyl non-resonant multiphoton ionization from the photodissociation of CH 3 I in the A-band

2017 ◽  
Vol 375 (2092) ◽  
pp. 20160205 ◽  
Author(s):  
Sonia Marggi Poullain ◽  
David V. Chicharro ◽  
Luis Rubio-Lago ◽  
Alberto García-Vela ◽  
Luis Bañares
Keyword(s):  
Laser Pulse ◽  
Gas Phase ◽  
Potential Energy Surfaces ◽  
Quantum Dynamics ◽  
Multiphoton Ionization ◽  
Imaging Study ◽  
Probe Laser ◽  
Excitation Wavelength ◽  
Velocity Map Imaging ◽  
Efficient Detection

Chemical reaction dynamics and, particularly, photodissociation in the gas phase are generally studied using pump–probe schemes where a first laser pulse induces the process under study and a second one detects the produced fragments. Providing an efficient detection of ro-vibrationally state-selected photofragments, the resonance enhanced multiphoton ionization (REMPI) technique is, without question, the most popular approach used for the probe step, while non-resonant multiphoton ionization (NRMPI) detection of the products is scarce. The main goal of this work is to test the sensitivity of the NRMPI technique to fragment vibrational distributions arising from molecular photodissociation processes. We revisit the well-known process of methyl iodide photodissociation in the A-band at around 280 nm, using the velocity-map imaging technique in conjunction with NRMPI of the methyl fragment. The detection wavelength, carefully selected to avoid any REMPI transition, was scanned between 325 and 335 nm seeking correlations between the different observables—the product vibrational, translational and angular distributions—and the excitation wavelength of the probe laser pulse. The experimental results have been discussed on the base of quantum dynamics calculations of photofragment vibrational populations carried out on available ab initio potential-energy surfaces using a four-dimensional model. This article is part of the themed issue ‘Theoretical and computational studies of non-equilibrium and non-statistical dynamics in the gas phase, in the condensed phase and at interfaces’.

Nazarov Cyclization and Oxo-Diels–Alder Reaction of Chalcones Induced by the Naked Silver Cation in Gas Phase

2013 ◽  
Vol 32 (11) ◽  
pp. 3385-3390 ◽  
Author(s):  
Hezhi Sun ◽  
Yunfeng Chai ◽  
Lin Wang ◽  
Kezhi Jiang ◽  
Yuanjiang Pan
Keyword(s):  
Gas Phase ◽  
Alder Reaction ◽  
Diels Alder ◽  
Silver Cation ◽  
Nazarov Cyclization ◽  
Diels Alder Reaction

ChemInform Abstract: Polar (4 + 2+) Diels-Alder Cycloadditions of Acylium Ions in the Gas Phase.

ChemInform ◽  
2010 ◽  
Vol 25 (3) ◽  
pp. no-no
Author(s):  
M. N. EBERLIN ◽  
R. G. COOKS
Keyword(s):  
Gas Phase ◽  
Diels Alder

Kinetics of the diels-alder addition of ethene to cyclohexa-1,3-diene and its reverse reaction in the gas phase

1980 ◽  
Vol 12 (4) ◽  
pp. 253-259 ◽  
Author(s):  
G. Huybrechts ◽  
D. Rigaux ◽  
J. Vankeerberghen ◽  
B. Van Mele
Keyword(s):  
Gas Phase ◽  
Diels Alder ◽  
Reverse Reaction ◽  
Kinetics Of

scholarly journals Structural characterization of holo- and apo-myoglobin in the gas phase by ultraviolet photodissociation mass spectrometry

2015 ◽  
Vol 6 (2) ◽  
pp. 1324-1333 ◽  
Author(s):  
Michael B. Cammarata ◽  
Jennifer S. Brodbelt
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Structural Characterization ◽  
Ultraviolet Photodissociation ◽  
193 Nm

193 nm UV photodissociation of myoglobin in the gas phase showed preferential backbone cleavages in regions with higher relative B-factors.

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