Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Selenium dioxide is the chemical compound with the formula SeO2. This colorless solid is one of the most frequently encountered compounds of selenium. It is used in making specialized glasses as well as a reagent in organic chemistry.[4]
^"Safety data sheet: Selenium dioxide" (PDF). integrachem.com. 27 March 2015. Retrieved 2022-12-02.
^"Selenium dioxide safety and hazards". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-12-02.
^"Selenium compounds (as Se)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
^Hoekstra, William J.; Fairlamb, Ian J. S.; Giroux, Simon; Chen, Yuzhong (2017). "Selenium(IV) Oxide". Encyclopedia of Reagents for Organic Synthesis. pp. 1–12. doi:10.1002/047084289X.rs008.pub3. ISBN 978-0-470-84289-8.
Seleniumdioxide is the chemical compound with the formula SeO2. This colorless solid is one of the most frequently encountered compounds of selenium...
isotopes. Selenium compounds commonly exist in the oxidation states −2, +2, +4, and +6. Selenium forms two oxides: seleniumdioxide (SeO2) and selenium trioxide...
The Riley oxidation is a seleniumdioxide-mediated oxidation of methylene groups adjacent to carbonyls. It was first reported by Riley and co-workers in...
organoselenium compounds, chemical compounds containing carbon-to-selenium chemical bonds. Selenium belongs with oxygen and sulfur to the group 16 elements or...
forms two oxides: seleniumdioxide (SeO2) and selenium trioxide (SeO3). Seleniumdioxide is formed by the reaction of elemental selenium with oxygen: Se...
pyramidal molecule. Selenium oxydichloride can be prepared by several methods, and a common one involves the conversion of seleniumdioxide to dichloroselenious...
precursor to Se(VI) compounds. Selenium trioxide is difficult to prepare because it is unstable with respect to the dioxide: 2 SeO3 → 2 SeO2 + O2 It has...
Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula SO 2. It is...
Selenium oxide may refer to either of the following compounds: Seleniumdioxide, SeO2 Selenium trioxide, SeO3 Diselenium pentoxide, Se2O5 This set index...
It also forms by the reaction of bromine trifluoride (BrF3) with seleniumdioxide. The crude product can be purified by sublimation. The relative reactivity...
composites. Camphorquinone is produced by the oxidation of camphor with seleniumdioxide. Polymerization is induced very slowly by camphorquinone, so amines...
Selenium is an essential micronutrient for animals, though it is toxic in large doses. In plants, it sometimes occurs in toxic amounts as forage, e.g....
involving more easily handled reagents entails the fluorination of seleniumdioxide with sulfur tetrafluoride: SF4 + SeO2 → SeF4 + SO2 An intermediate...
Tellurium dioxide (TeO2) is a solid oxide of tellurium. It is encountered in two different forms, the yellow orthorhombic mineral tellurite, β-TeO2, and...
is prepared by oxidising selenium compounds in lower oxidation states. One method involves the oxidation of seleniumdioxide with hydrogen peroxide: SeO2...
providing the essential trace element selenium. Its preparation involves reacting sodium hydroxide with seleniumdioxide. "Sodium hydrogen selenite". pubchem...
involved chlorination of elemental selenium. An improved method involves the reaction of a mixture of selenium, seleniumdioxide, and hydrochloric acid: 3 Se...
the most common water-soluble selenium compound. Sodium selenite usually is prepared by the reaction of seleniumdioxide with sodium hydroxide: SeO2 +...
through the metallurgical use of phosphoric acid or in conjunction with seleniumdioxide can create a high contrast visual substrate onto which other compositional...
Selenium oxybromide (SeOBr2) is a selenium oxohalide chemical compound. Selenium oxybromide can be prepared through the reaction of seleniumdioxide and...
available sesquiterpenoid: In the synthesis of some fine chemicals, seleniumdioxide is used to convert alkenes to allylic alcohols: R2C=CR'-CHR"2 + [O]...
materials, e.g., sodium selenite may be preferred over easily evaporating seleniumdioxide (SeO2). Also, more readily reacting raw materials may be preferred...
yield m-phenoxytoluene. Second, oxidation of m-phenoxytoluene over seleniumdioxide provides m-phenoxybenzaldehyde. Third, a Cannizzaro reaction of the...
to the corresponding nitrone using hydrogen peroxide, catalyzed by seleniumdioxide. Tetrahydroisoquinoline derivatives may be formed in the body as metabolites...
general are prepared by allylic oxidation of allyl compounds, using seleniumdioxide or organic peroxides. Other methods include carbon-carbon bond-forming...
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