5-decene

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Structural formula
Structural formula of cis-5-decene

Structural formula of trans-5-decene
cis -form (above) trans -form (below)
General
Surname 5-decene
other names

Dec-5-en

Molecular formula C 10 H 20
Brief description

colorless liquid

External identifiers / databases
CAS number
  • 19689-19-1
  • 7433-78-5 ( cis )
  • 7433-56-9 ( trans )
PubChem 23916
Wikidata Q30118589
properties
Molar mass 140.27 g mol −1
Physical state

liquid

density

0.74 g cm −3 (25 ° C)

Melting point
  • −112 ° C ( cis )
  • −73 ° C ( trans )
boiling point
  • 170 ° C ( cis )
  • 171 ° C ( trans )
solubility
  • practically insoluble in water
  • miscible with ethanol and ether
Refractive index

1.424 (20 ° C)

safety instructions
GHS labeling of hazardous substances
02 - Highly / extremely flammable 07 - Warning

Caution

H and P phrases H: 226-315-319-335
P: 261-305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

5-Decene is a chemical compound from the group of the decenes , which occurs in two isomeric forms.

Extraction and presentation

trans -5-decene can be obtained by reacting 5-decyne with lithium in ammonia . By reacting 5-decyne with hydrogen and a Lindlar catalyst , cis -5-decene can be produced. Through additional reaction steps (reaction with bromine , dichloromethane and sodium amide to 5-decyne), a conversion of the cis to the trans form and vice versa is possible in this way. Using special catalysts, cis -5-decene can also be prepared with a high degree of purity by metathesis of 1-hexyne .

properties

5-decene is a colorless liquid that is practically insoluble in water. Its pyrolysis produces numerous other organic compounds in addition to propene , ethene , 1-butene and 1-heptene .

use

trans -5-decene can be used to characterize the effect of cyclization and the stability of the Criegee intermediates formed during ozonolysis .

Individual evidence

  1. a b c d e f g h data sheet trans-5-decene, 99% from Sigma-Aldrich , accessed on June 3, 2017 ( PDF ).
  2. a b c d e f William M. Haynes: CRC Handbook of Chemistry and Physics, 94th Edition . CRC Press, 2016, ISBN 978-1-4665-7115-0 , pp. 142 ( limited preview in Google Book search).
  3. Data sheet trans-5-Decene, 97% at AlfaAesar, accessed on June 3, 2017 ( PDF )(JavaScript required) .
  4. John E. McMurry: Organic Chemistry . Cengage Learning, 2015, ISBN 978-1-305-68646-5 , pp. 286-IA10 ( limited preview in Google Book search).
  5. ^ McMurry, John E. Study Guide with Student Solutions Manual for McMurry's Organic Chemistry, 8th . Cengage Learning, 2011, ISBN 1-285-97481-6 , pp. 209 ( limited preview in Google Book search).
  6. mit.edu: DSpace @ MIT: Z-selective olefin metathesis processes and Cis / syndioselective ROMP with high oxidation state molybdenum alkylidenes , accessed on June 3, 2017
  7. ^ Serban C. Moldoveanu: Pyrolysis of Organic Molecules Applications to Health and Environmental Issues . Elsevier, 2009, ISBN 978-0-08-093215-6 , pp. 181 ( limited preview in Google Book search).