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- W2619123154 abstract "Donor-acceptor compounds of higher selenium and sulphur oxideswith organic oxygen donor attract relatively low attention,even thought a high Lewis acidity of these oxides and basicityof oxygen atoms in organic oxygen donor molecules imply theirexistence and in the case of sufficient stability also theirpractical use. In our attempts to isolate a stable adduct ofselenium trioxide we used pyridine-N-oxide as an oxygen basewith no groups capable of migration. A white microcrystallineDA-complex C5H5NO.SeO3 was isolated by the reaction bothcomponents in nitromethane in nearly quantitative yield. Theadduct was characterized by RA spectroscopy, elemental andX-ray structure analyses. C5H5NO.SeO3 is thermally stable andit is possible to store it for several months at laboratorytemperature. If the reaction mixture is left without anydisturbance for two weeks, crystals of 2pyO.Se2O5 appeared, asa result of redox reaction leading to this Se(IV)/Se(VI)compound." @default.
- W2619123154 created "2017-06-05" @default.
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- W2619123154 date "2003-01-01" @default.
- W2619123154 modified "2023-10-11" @default.
- W2619123154 title "The Reaction of Selenium Trioxide with Pyridine-N-oxide." @default.
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