?,?-Dinitro derivatives ofN-alkyl-N?-alkoxydiazene-N-oxides

Nitric Oxide Adsorption in Cu3btc2-Type MOFs—Physisorption and Chemisorption as NONOates

“…Therefore, we assign the signal at −82 and −72 ppm to the two labeled nitrogens of the NONOate. These two signals appear in the typical 15 N chemical shift range of N=N-type compounds. , Therefore, this is the first report of NONOate signals by solid-state NMR in a porous system. On the basis of signal intensity, the signal at −72 ppm could also indicate a decomposition product.…”

“…Hyperfine couplings could not be calculated at this level of theory. For comparison, in diazoketone, the signal of the carbon attached to nitrogen is shifted by 10 ppm because of formation of an alkylated NONOate . Although shifts in paramagnetic systems are not straightforward to compare with diamagnetic systems, the similarity offers some hint for the assignment to NONOate signals.…”

“…On the basis of signal intensity, the signal at −72 ppm could also indicate a decomposition product. Luk’yanov et al reported a single narrow 14 N signal around −70 ppm for alkyl- N -alkoxydiazene- N -oxides (an alkylated NONOate) generated from the reduction of diazoketone . Fluck and Ekkehard report 15 N signals for NONOate at 12 and −159 ppm by the reaction between ethylamine and NO in the liquid state .…”

Chemistry of the Nitric Oxide-Releasing Diazeniumdiolate (“Nitrosohydroxylamine”) Functional Group and Its Oxygen-Substituted Derivatives

“…14 N NMR spectroscopy may also be useful since the N -oxide nitrogen signal of O 2 -alkylated diazeniumdiolates has been reported to be relatively sharp (ca. −65 to −70 ppm relative to nitromethane) . The 15 N chemical shifts of the N−O 1 nitrogens of several selectively labeled analogues are reported to be 320−360 ppm relative to ammonia …”

“…-65 to -70 ppm relative to nitromethane). 204 The 15 N chemical shifts of the N-O 1 nitrogens of several selectively labeled analogues are reported to be 320-360 ppm relative to ammonia. 205 Additional analytical studies of great interest but limited scope include photoelectron spectroscopy, 205,206 ESR, 190 polarography, 207 and cyclic voltammetry.…”