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- W2007455830 abstract "Die thermische Zersetzung einiger 9-mono-oder 9.10-disubstituierter Phenanthren-Derivate an den heißen Wänden einer Quarzkapillare wird durch eine Kombination von Hochvakuumpyrolyse und Massenspektrometrie (Pyrolyse-Massenspektrometrie) untersucht. 9-Brom-, 9-Jod-, 9-Nitro, 9.10-Dibrom-, 9-Brom-10-nitro-phenanthren und Phenanthren-dicarbonsäure-(9.10)-anhydrid liefern vorwiegend 9.10-Dehydro-phenanthren. das teilweise in der Pyrolyse-Zone zum, Phenanthren hydriert wird; Das Ionisationspotential des 9.10-Dehydro-phenanthrens wird zu 8.08 ± 0.05 e V bestimmt, seine Bildungsenthalpie zu – 143 kcal/Mol ab geschätzt. Beim Erhitzen von 9-Brom-phenanthren in Anthracen wird entstehendes 9.10- Dehydro-phenanthren unter Bildung von Dibenzotriptycen abgefangen. Mass Spectrometry of Instable Organic Molecules, II1). Evidence for 9,10-Dehydrophenanthrene by Pyrolysis/Mass Spectrometry The thermal decomposition of some 9-mono- or 9,10-disubstituted derivatives of phenanthrene is investigated by a combination of low pressure pyrolysis and mass spectrometry. 9-Bromo-, 9-iodo-, 9-nitro-, 9,10-dibromo-, 9-bromo-10-nitrophenanthrene, and 9,10-phenanthrene dicarboxylic acid anhydride decompose mainly to 9,10-dehydrophenanthrene (9, 10-phenanthryne) with is partly hydrogenated to phenanthrene in the pyrolysis zone. The ionization potential of dehydrophenanthrene is measured (8,08 ± 0.05eV) and the heat of formation is estimated (+143 kcal/mol.). Heating of 9-bromophenanthrene in anthracene results in dibenzotriptiycen via 9,10-dehydrophenanthrene." @default.
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- W2007455830 title "Massenspektrometrie instabiler organischer Moleküle, II1) Nachweis von 9.10-Dehydro-phenanthren durch Pyrolyse-Massenspektrometrie" @default.
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- W2007455830 doi "https://doi.org/10.1002/jlac.19697260109" @default.
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