When sunlight hits nitryl chloride the next morning, it regenerates nitrogen oxides and frees a chlorine radical that attacks other molecules in reactions that can lead to the formation of ozone.
"This study shows - for the first time - that the ocean is a terminal sink for nocturnal nitrogen oxides, and not a source for nitryl chloride under these sampling conditions," she added.
Naturally occurring [beta]-asarone when subjected to nitration with nitryl iodide (NaN[O.sub.2]/[I.sub.2]/ethylene glycol) obtained 1-(2,4,5-trimethoxy phenyl)-1-nitropropene (2) (Scheme 1) as yellow crystals.
By, "Nitration of substituted styrenes with nitryl iodide," Tetrahedron Letters, vol.
The plan was to sample nitryl chloride levels in marine air, which computer models predicted would not exceed 50 parts per trillion.
Before leaving, the scientists decided to test the equipment they would use to detect airborne nitryl chloride on the cruise by sampling the air in Boulder, a mile above sea level.