Fulven
| Structural formula | ||||||||||
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| General | ||||||||||
| Surname | Fulven | |||||||||
| Molecular formula | C 6 H 6 | |||||||||
| Brief description |
yellow, highly volatile oil |
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| properties | ||||||||||
| Molar mass | 78.11 g mol −1 | |||||||||
| Physical state |
liquid |
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| density |
0.824 g cm −3 |
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| boiling point |
8 ° C (at 7.3 k Pa ) |
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| safety instructions | ||||||||||
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||
Fulvene (5-methylene-1,3-cyclopentadiene) or pentafulvene is a highly toxic, yellowish, oily liquid that polymerizes easily. The name is derived from the Latin fulvus = red and yellow.
presentation
Fulven is formed by the condensation of cyclopentadiene with formaldehyde . As was discovered in 1957, it can also be obtained from benzene by photochemical valence isomerization .
properties
Like all compounds from the group of fulvenes is colored the eponymous parent compound fulvene intense and very reactive. The fulvenes were discovered in 1900 by the chemist Johannes Thiele . Fulven itself is yellow in color.
literature
- Johannes Thiele: About ketone reactions in the Cyclopentadiene. In: Reports of the German Chemical Society . 33, No. 1, 1900, pp. 666-673, doi: 10.1002 / cber.190003301113 ( digitized on Gallica ).
Web links
Commons : Fulven - Collection of images, videos and audio files
Individual evidence
- ^ A b Paul Walden, Carl Graebe: History of organic chemistry since 1880 . Springer-Verlag, 2013, ISBN 978-3-662-28693-7 , pp. 825 ( limited preview in Google Book search).
- ↑ a b c d e Entry on Fulvene. In: Römpp Online . Georg Thieme Verlag, accessed on September 23, 2015.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ^ John B. Buckingham: Dictionary of Organic Compounds . Sixth Edition, Chapman and Hall, London 1996, ISBN 0-412-54090-8 .
- ↑ Eugen Müller: Newer views of organic chemistry - organic chemistry for advanced students . Springer-Verlag, 2013, ISBN 978-3-642-87591-5 , p. 298 ( limited preview in Google Book search).
- ↑ Jürgen Kiefer : Ultraviolet rays . Walter de Gruyter, 1977, ISBN 3-11-082276-8 , pp. 391 ( limited preview in Google Book search).