Chlorine Oxide Radicals ClOx (x=1-4) Studied by Matrix Isolation Spectroscopy

Abstract

Ethylen ist das kleinste Reifungshormon der Pflanzen. In der Zuschrift auf berichten T. M. Swager et al. über ein Gemisch aus einwandigen Kohlenstoffnanoröhren und einem Kupfer(I)‐Komplex als chemoresistive Funktionseinheit für den hoch empfindlichen und selektiven Nachweis von Ethylen im Sub‐ppm‐Bereich. Mit diesem Sensor ließen sich die Reifungsstadien verschiedener Früchte ermitteln.

Electron Photodetachment from Aqueous Anions. 1. Quantum Yields for Generation of Hydrated Electron by 193 and 248 nm Laser Photoexcitation of Miscellaneous Inorganic Anions

“…[40] This might account for a large difference between the QYs for electron detachment in 193 nm photoexcitation of bicarbonate and carbonate. Electron photodetachment from perchlorate is another possible example of electron transfer concerted with a rapid reaction of the residual radical; in this case, water oxidation (the ClO 4 radicals were observed by IR spectroscopy in a low temperature neon matrix only [66]). …”

Communication: Interaction of BrO radical with the surface of water

“…[1][2][3][4][5][6][7][8][9] In particular, bromine containing radical species have been suggested to be more active than the chlorine analogues in the destructive processes. 10 One set of reactions involving bromine [4][5][6] that are crucial to ozone depletion within the marine boundary layer are as follows:…”

“…On the other hand, it is widely accepted that hydrogen-bonded complexes with radicals and water play key roles in atmospheric reactions, especially at the surface of the water droplet. [5][6][7][8][9][10][11][12][13][14] The key species involved in the chemistry is the BrO·H 2 O complex. 10,15,16 Gálvez et al 15 have studied the equilibrium geometries, energies, and properties of the BrO hydrates by means of ab initio calculations.…”

Oxidation of valeraldehyde by chlorine dioxide

“…4 The solvents n С 7 H 16 (1), CCl 4 (2), benzene (3), 1,4 dioxane (4), ethyl acetate (5), acetone (6), tert butanol (7), acetonitrile (8), and ethanol (9) were purified by known procedures. 5 The kinetics of valeraldehyde oxidation by chlorine dioxide in various solvents was studied on a Specord M40 spectrophotometer (Carl Zeiss Jena) by a decrease in the absorbance at the absorption maxima of ClO 2 at 356, 359, 360, 354, 358, 361, 362, 363, and 360 nm in a medium of solvents 1-9 under the condition that [ClO 2 ] 0 << [RCHO] 0 , where [ClO 2 ] 0 and [RCHO] 0 are the initial concentrations of chlorine dioxide and aldehyde.…”

“…The ClO • radical formed recombines to form chlorine and oxygen. 8 The formation of Cl 2 is confirmed by the formation of dichlorine derivatives upon the introduction of olefins into the system.…”