Application In Synthesis of Silver(I) trifluoromethanesulfonate. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Silver(I) trifluoromethanesulfonate, is researched, Molecular CAgF3O3S, CAS is 2923-28-6, about Catalytic reduction of nitrate by an oxidorhenium (V) complex. Author is Schachner, J. A.; Wiedemaier, F.; Zwettler, N.; Peschel, L. M.; Boese, A. D.; Belaj, F.; Moesch-Zanetti, N. C..
The previously published oxidorhenium(V) complex [ReOCl(L1)2] (2), equipped with the bidentate phenol-dimethyloxazoline ligand HL1 (2-(4,4-dimethyl-4,5-dihydro-1,3-oxazol-2-yl)-phenol), shows catalytic activity for the reduction of nitrate to nitrite under mild, ambient and aqueous conditions. The reaction operates under an oxygen atom transfer (OAT) mechanism, using di-Me sulfide SMe2 (DMS) as oxygen acceptor. Experiments with catalytic amounts of 2 and labeled 15NO-3 proved the full reduction of 15NO-3 to 15NO-2 by 15N NMR spectroscopy. For the second reduction step of nitrite NO-2, we have evidence for a single electron reduction to yield paramagnetic NO, as from one nitrate reduction experiment the paramagnetic cis-dioxidorhenium(VI) complex [Re(O)2(L1)2] (3) could be isolated and characterized by single-crystal X-ray diffraction anal. Such a single electron reduction of nitrite NO-2 would yield NO and complex 3 as the oxidation product. In a stoichiometric experiment of 2, 15NO-3 and DMS, nitrous oxide 15N2O could be detected as the only 15N containing product by 15N NMR spectroscopy, proving that further reduction beyond NO is possible with pre-catalyst 2. The rhenium species responsible for the reduction to N2O is currently unknown. Most likely, N2O is formed via an intermediate rhenium nitrosyl complex. Exptl. data was gathered by 1H and 15N NMR, IR- and UV-Vis spectroscopy, HR-ESI mass spectrometry, X-ray crystallog., and supported by theor. computations (DFT).
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Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem