- FLUOROCARBON-SELENIUM CHEMISTRY: ACCOMPLISHMENTS AND QUESTS
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The binary selenium fluorides SeFn (n = 2, 4, 6) and Se2F2 are considered along with corresponding perfluorohalogenoorganoselenium compounds with selenium in the oxidation states 1, 2, 4 and 6.For lower selenium fluorides, preparation and characterisation are emphasized.Recent results in the chemistry of SeCF2, CF3SeCl, CF3SeSeCF3, CF3Se(O)OM and CF3SeVI-compounds are presented.A comparison with the correspondig sulfur chemistry is also provided.
- HAAS, A.
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p. 415 - 440
(2007/10/02)
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- Gas Phase Reactions, 40. Selenoformaldehyde: Highly Correlated Wave Function and Photoelectron Spectroscopic Evidence
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A systematic search for the unknown molecule selenoformaldehyde, H2C=Se, starts with the precalculation of its ionization pattern from ab-initio-PNO-CI and CEPA wave functions.The selenium precursors H3CSeSeCH3, H3CSeCN, H3CSeCl, and (H2CSe)3 are pyrolyzed in a flow system under PE spectroscopic real-time analysis: Applying "computerized spectra stripping" to the PE spectra of the pyrolysis mixtures, an ionization pattern can be extracted which correlates satisfactorily with the quantum chemical prediction for H2C=Se.To further support the assignment, selenoacetaldehyde, CH3CH=Se, and selenocarbonyl difluoride, F2C=Se, are prepared by thermal monomerization of 3 and (F2CSe)2, respectively.
- Bock, Hans,Aygen, Sitki,Rosmus, Pavel,Solouki, Bahman,Weissflog, Eckhard
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p. 187 - 202
(2007/10/02)
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