dioxygen


Also found in: Dictionary, Thesaurus, Medical.
Related to dioxygen: digoxin, Singlet oxygen

dioxygen

[dī′äk·si·jən]
(chemistry)
O2 Molecular oxygen.
References in periodicals archive ?
H2O2 detection from intact mitochondria as a measure for one-electron reduction of dioxygen requires a non-invasive assay system.
Degradation of 2,3,4,6-tetrachlorophenol at low temperature and low dioxygen concentrations by phylogenetically different groundwater and bioreactor bacteria, Biodegradation 12: 291-301.
Their topics include copper dioxygenases, energy conversion and conservation by cytochrome oxidases, the structure and reactivity of copper-oxygen species revealed by competitive oxygen-18 isotope effects, chemical reactivity in copper active-oxygen complexes, supramolecular copper dioxygen chemistry, and organic synthetic methods using copper oxygen chemistry.
It was also found that the subsequent transformation of formate to formic acid can only occur with the presence of dioxygen.
Flows of dinitrogen, dioxygen, and TMDSO at 1800, 25, 5 seem (standard cubic centimeter per minute), respectively, were controlled at 550 Pa by means of MKS mass-flow controllers.
To test the constancy by numerical calculation is easy: Duclaux [2] presented data that indicate that both a and b for non-polar molecules dinitrogen and dioxygen vary by about a factor two for a temperature range of a similar factor up to 300 K; a and b thus vary in inverse proportion to the absolute temperature.
Among their topics are hydrogen reactions on nanostructured surfaces, designing palladium-based alloy electrocatalysts for hydrogen oxidation reaction in fuel cells, biocathodes for dioxygen reduction in biofuel cells, the importance of enzymes as benchmarkes for electrocatalysts, an approach to microbial fuel cells and their applications, fuel cells with neat proton-conducting salt electrolytes, the electronic structure and reactivity of transition metal complexes, understanding electrocatalysts for low-temperature fuel cells, and the operando X-ray absorption spectroscopy of polymer electrolyte fuel cells,
Possible involvement of superoxide and dioxygen with cryptochrome in avian magnetoreception: Origin of Zeeman resonances observed by in vivo EPR spectroscopy.
The reaction was catalyzed by superoxide produced by cathodic reduction of dioxygen, which serves as an electrogenerated base.
Of all the hemolymph proteins, hemocyanin (Hc), a dioxygen carrying copper respiratory protein, constitutes roughly 90-95% of the total hemolymph protein (THP) and, therefore, is a convenient target for quantifying THP of vitality (Uglow 1969a, Uglow 1969b, Senkbeil & Wriston 1981, Hagerman 1983).
Further, the two molecules of copper are bridged together by 2 molecules of oxygen resulting in the formation of a dioxygen bridge.
Autoxidation of limonene, [alpha]-pinene and [beta]-pinene by dioxygen catalyzed by Co[(OAc).