Heterogeneous kinetics of the dissociation of an inorganic salt, potassium carbonate, in an organic solvent, dimethylformamide

Article Abstract:

The dissociation kinetics of potassium carbonate in dimethylformamide at elevated temperatures is studied in the presence of ultrasound, as revealed via monitoring of the deprotonation of 2-cyanophenol by dissolved K(sub 2)CO(sub 3). The results show that there is a rapid deprotonation of 2-cyanophenol via predissolved inorganic solid in solution, however with slight excess of K(sub 2)CO(sub 3), the kinetics of loss of 2-cyanophenol were controlled by the rate of dissolution of K(sub 2)CO(sub 3).

Phenols, Phenols (Class of compounds), Amides

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Electronic excitation of Rh(super I)(CO)2 species on Al2O3 surfaces: photodissociation of the Rh(super I)-CO bond

Article Abstract:

The infrared and ultraviolet-visible spectra of Rh(super I)(CO)2 species formed from metallic Rh supported on Al2O3 when treated with CO at 300 K were analyzed. Results indicated that a surface oxidation process acting on metallic Rh sites and involving Al-OH groups as oxidizing centers is responsible for generating the Rh(super I)(CO)2 species. Moreover, the Rh-Co bond-breaking was due to the electron transfer from filled d orbitals to the b2(xy) metal-ligand antibonding molecular orbital.

Carbon monoxide, Aluminum oxide, Rhenium

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Photodissociation dynamics of small aromatic molecules studied by multimass ion imaging

Article Abstract:

The multimass ion imaging techniques are employed to study the photodissociation dynamics of various small aromatic molecules. The results prove that the H-atom elimination thresholds in an aromatic decrease with an increase in the number of nitrogen atoms in it.

Aromatic compounds

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