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.

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).

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 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

scholarly journals Room temperature stable multitalent: highly reactive and versatile copper guanidine complexes in oxygenation reactions

2021 ◽  
Author(s):  
Melanie Paul ◽  
Alexander Hoffmann ◽  
Sonja Herres-Pawlis
Keyword(s):  
Molecular Oxygen ◽  
Density Functional ◽  
Room Temperature ◽  
Oxidation Reactions ◽  
Functional Theory ◽  
Promising Tool ◽  
Vis Spectroscopy ◽  
Polycyclic Aromatic ◽  
Halide Complexes ◽  
Selective Formation

AbstractInspired by the efficiency of natural enzymes in organic transformation reactions, the development of synthetic catalysts for oxygenation and oxidation reactions under mild conditions still remains challenging. Tyrosinases serve as archetype when it comes to hydroxylation reactions involving molecular oxygen. We herein present new copper(I) guanidine halide complexes, capable of the activation of molecular oxygen at room temperature. The formation of the reactive bis(µ-oxido) dicopper(III) species and the influence of the anion are investigated by UV/Vis spectroscopy, mass spectrometry, and density functional theory. We highlight the catalytic hydroxylation activity towards diverse polycyclic aromatic alcohols under mild reaction conditions. The selective formation of reactive quinones provides a promising tool to design phenazine derivatives for medical applications. Graphic abstract

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