Kinetics and mechanisms of the reaction of O(1D)-atoms with CBrF 3 and CBrF 2 CBrF 2 in the gas phase and in solid argon matrices

1994 ◽  
Author(s):  
H. Lorenzen-Schmidt ◽  
R. Weller ◽  
Otto Schrems ◽  
Claus J. Nielsen
Keyword(s):  
Gas Phase ◽  
Argon Matrices ◽  
Solid Argon

The photochemistry of RDX in solid argon at 10 K

1991 ◽  
Vol 69 (10) ◽  
pp. 1535-1538 ◽  
Author(s):  
Jeff Alix ◽  
Susan Collins
Keyword(s):  
Ftir Spectroscopy ◽  
Key Words ◽  
Gas Phase ◽  
Condensed Phase ◽  
Thermal Reactions ◽  
The Matrix ◽  
Intermolecular Reactions ◽  
Argon Matrices ◽  
Solid Argon ◽  
Kinetics Of

The photochemistry of RDX was studied in argon matrices at 10 K and examined by FTIR spectroscopy. The spectra and kinetics of product growth indicate that there are two decomposition pathways: [I]        RDX → 4NO + 2CH2O + N2 + CH2 → 4NO + 2CO + N2 +CH4 + H2 [II]        RDX → N2O + [O3 + N2] or [N2O3] + CO2 + C2H2 +N2 + 2H2 The mechanism II nitrogen products can easily be rationalized for the chair configuration of RDX with axial NO2 groups adjacent (Cs symmetry). When considering the carbon products of II, it may be necessary to postulate intermolecular reactions. Our studies gave no evidence for the symmetric triple fission path, which leads to N2O and CH2O, nor for the NO2 stripping mechanism reported for the gas-phase thermal reactions, which leads to the formation of NO2 and HCN. Rather, our findings were more consistent with the known condensed phase products. The production of CH4, C2H2, N2O3, and O3 are unique to the matrix study. Key words: RDX, photochemistry, argon matrices.

scholarly journals Absorption and Laser Induced Fluorescence Spectroscopy of Neutral Polycyclic Aromatic Hydrocarbons in Argon matrices

2015 ◽  
Vol 11 (A29A) ◽  
Author(s):  
Salma Bejaoui ◽  
Farid Salama ◽  
Ella Sciamma-O'Brien
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Fluorescence Spectra ◽  
Laser Induced Fluorescence ◽  
Broad Emission Band ◽  
Band Emission ◽  
Polycyclic Aromatic ◽  
Argon Matrices ◽  
Extended Red Emission ◽  
Solid Argon

Polycyclic aromatic hydrocarbons (PAHs) are considered as plausible carriers for the extended red emission (ERE), a photoluminescent process associated with a wide variety of interstellar environments, as well as for broad emission band features seen in cometary spectra. We report the absorption spectra of phenanthrene, anthracene, fluoranthene, pentacene, pyrene, chrysene and triphenylene isolated at 10 K in solid argon matrices together with laser induced fluorescence (LIF) spectra at 355 nm of matrix-isolated anthracene and fluoranthene. LIF spectra are compared with the UV/blue fluorescence spectra of the Red Rectangle Nebula (RR). The LIF spectra measured in solid Ar matrices have been shifted to the predicted position of the PAH band emission in the gas phase for comparison with the astronomical observations (Fig. 1).

scholarly journals Reactions of the methylsulfinyl radical [CH3(O)S˙] with oxygen (3O2) in solid argon

2015 ◽  
Vol 51 (49) ◽  
pp. 10022-10025 ◽  
Author(s):  
Hans Peter Reisenauer ◽  
Jarosław Romański ◽  
Grzegorz Mlostoń ◽  
Peter R. Schreiner
Keyword(s):  
Molecular Oxygen ◽  
Isotopic Labelling ◽  
Vis Spectroscopy ◽  
Argon Matrices ◽  
Solid Argon

The atmospherically highly relevant methylsulfinyl radical (CH3(O)S˙) reacts with molecular oxygen in cryogenic argon matrices and forms the methylsulfinylperoxyl radical (CH3(O)SOO˙). The later was characterized by IR and UV/Vis spectroscopy, including isotopic labelling studies.

Structure of tris(cyclopentadienyl)scandium isolated in solid argon matrices

2005 ◽  
Vol 734 (1-3) ◽  
pp. 115-121 ◽  
Author(s):  
Jun Miyazaki ◽  
Yasuhiro Yamada
Keyword(s):  
Argon Matrices ◽  
Solid Argon

Infrared absorption in doped rare gas crystals

1983 ◽  
Vol 61 (11) ◽  
pp. 1545-1548 ◽  
Author(s):  
J. Vermesse ◽  
Dominique Levesque ◽  
Jean-Jacques Weis ◽  
Michael L. Klein
Keyword(s):  
Experimental Data ◽  
Gas Phase ◽  
Infrared Absorption ◽  
Rare Gas ◽  
Pair Potentials ◽  
Molecular Dynamics Calculations ◽  
Phase Data ◽  
Interaction Dipole Moment ◽  
Three Body ◽  
Solid Argon

Molecular dynamics calculations based upon realistic pair potentials plus three body forces are used to investigate the properties of solid argon doped wth 2% krypton. The infrared absorption, which is computed using an expression for the interaction dipole moment derived from gas phase data, agrees well with experimental data.

Infrared Absorption Spectra of B2O3, B2O2, and BO2 in Solid Argon Matrices

1963 ◽  
Vol 38 (1) ◽  
pp. 87-98 ◽  
Author(s):  
A. Sommer ◽  
David White ◽  
M. J. Linevsky ◽  
D. E. Mann
Keyword(s):  
Absorption Spectra ◽  
Infrared Absorption ◽  
Infrared Absorption Spectra ◽  
Argon Matrices ◽  
Solid Argon

The vibrational spectra of N-phenylpyrrole in the gas phase, in argon matrices and in single crystals

2007 ◽  
Vol 333 (2-3) ◽  
pp. 168-178 ◽  
Author(s):  
D. Schweke ◽  
B. Brauer ◽  
R.B. Gerber ◽  
Y. Haas
Keyword(s):  
Single Crystals ◽  
Gas Phase ◽  
Vibrational Spectra ◽  
Argon Matrices

Modeling of some structural and vibrational properties of CO : CO2 complexes in gas phase and embedded in solid argon

1999 ◽  
Vol 484 (1-3) ◽  
pp. 145-159 ◽  
Author(s):  
J. Langlet ◽  
J. Caillet ◽  
M. Allavena ◽  
V. Raducu ◽  
B. Gauthier-Roy ◽  
...  
Keyword(s):  
Gas Phase ◽  
Vibrational Properties ◽  
Solid Argon
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