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- Cyanopolyyne abstract "Cyanopolyynes are a group of chemicals with the chemical formula HCnN (n=3,5,7, ...). Structurally, they are polyynes with a cyano group covalently bonded to one of the terminal acetylene units. A rarely seen group of molecules both due to the difficulty in production and the unstable nature of the paired groups, the cyanopolyynes have been observed as a major organic component in interstellar clouds. This is believed to be due to the hydrogen scarcity of some of these clouds. Interference with hydrogen is one of the reason for the molecule's instability due to the energetically favorable dissociation back into hydrogen cyanide and acetylene.Cyanopolyynes were first discovered in interstellar molecular clouds in 1971 using millimeter wave and microwave telescopes. Since then many higher weight cyanopolyynes such as HC7N and HC11N have been discovered, although some of these identifications have been disputed. Other derivatives such as methycyanoacetylene CH3C3N and ethylcyanoacetylene CH3CH2C3N have been observed as well. The simplest example is cyanoacetylene, H−C≡C−C≡N. Cyanoacetylene is more common on earth and it is believed to be the initial reagent for most of the photo-catalyzed formation of the interstellar cyanopolyynes. Cyanoacetylene is one of the molecules that was produced in the Miller–Urey experiment and is expected to be found in carbon-rich environments.Identification is made through comparison of experimental spectrum with spectrum gathered from the telescope. This is commonly done with measurement of the rotational constant, the energy of the rotational transitions, or a measurement of the dissociation energy. These spectra can either be generated ab initio from a computational chemistry program or, such as with the more stable cyanoacetylene, by direct measurement of the spectra in an experiment. Once the spectra are generated, the telescope can scan within certain frequencies for the desired molecules. Quantification can be accomplished as well to determine the density of the compounds in the cloud.".
- Cyanopolyyne wikiPageID "25584893".
- Cyanopolyyne wikiPageLength "9094".
- Cyanopolyyne wikiPageOutDegree "30".
- Cyanopolyyne wikiPageRevisionID "703054392".
- Cyanopolyyne wikiPageWikiLink Ab_initio.
- Cyanopolyyne wikiPageWikiLink Acetylene.
- Cyanopolyyne wikiPageWikiLink Angular_momentum.
- Cyanopolyyne wikiPageWikiLink Category:Alkynes.
- Cyanopolyyne wikiPageWikiLink Category:Nitriles.
- Cyanopolyyne wikiPageWikiLink Computational_chemistry.
- Cyanopolyyne wikiPageWikiLink Cosmic_ray.
- Cyanopolyyne wikiPageWikiLink Covalent_bond.
- Cyanopolyyne wikiPageWikiLink Cyanide.
- Cyanopolyyne wikiPageWikiLink Cyanoacetylene.
- Cyanopolyyne wikiPageWikiLink Diacetylene.
- Cyanopolyyne wikiPageWikiLink Dissociation_(chemistry).
- Cyanopolyyne wikiPageWikiLink Electromagnetic_spectrum.
- Cyanopolyyne wikiPageWikiLink Energy_level.
- Cyanopolyyne wikiPageWikiLink Extremely_high_frequency.
- Cyanopolyyne wikiPageWikiLink Hydrocarbon.
- Cyanopolyyne wikiPageWikiLink Hydrogen_cyanide.
- Cyanopolyyne wikiPageWikiLink Interstellar_cloud.
- Cyanopolyyne wikiPageWikiLink Miller–Urey_experiment.
- Cyanopolyyne wikiPageWikiLink Nebula.
- Cyanopolyyne wikiPageWikiLink Nitrogen.
- Cyanopolyyne wikiPageWikiLink Photocatalysis.
- Cyanopolyyne wikiPageWikiLink Photoionization.
- Cyanopolyyne wikiPageWikiLink Polyyne.
- Cyanopolyyne wikiPageWikiLink Radio_telescope.
- Cyanopolyyne wikiPageWikiLink Rigid_rotor.
- Cyanopolyyne wikiPageWikiLink Spectrometer.
- Cyanopolyyne wikiPageWikiLink Taurus_Molecular_Cloud_1.
- Cyanopolyyne wikiPageWikiLinkText "Cyanodecapentayne".
- Cyanopolyyne wikiPageWikiLinkText "Cyanodiacetylene".
- Cyanopolyyne wikiPageWikiLinkText "Cyanopentaacetylene".
- Cyanopolyyne wikiPageWikiLinkText "Cyanopolyyne".
- Cyanopolyyne wikiPageWikiLinkText "Cyanotetra-acetylene".
- Cyanopolyyne wikiPageWikiLinkText "Methyl-cyano-diacetylene".
- Cyanopolyyne wikiPageWikiLinkText "cyanopolyyne".
- Cyanopolyyne wikiPageUsesTemplate Template:Chem.
- Cyanopolyyne wikiPageUsesTemplate Template:Molecules_detected_in_outer_space.
- Cyanopolyyne wikiPageUsesTemplate Template:Reflist.
- Cyanopolyyne subject Category:Alkynes.
- Cyanopolyyne subject Category:Nitriles.
- Cyanopolyyne hypernym Group.
- Cyanopolyyne type Band.
- Cyanopolyyne type Alkyne.
- Cyanopolyyne type Hydrocarbon.
- Cyanopolyyne comment "Cyanopolyynes are a group of chemicals with the chemical formula HCnN (n=3,5,7, ...). Structurally, they are polyynes with a cyano group covalently bonded to one of the terminal acetylene units. A rarely seen group of molecules both due to the difficulty in production and the unstable nature of the paired groups, the cyanopolyynes have been observed as a major organic component in interstellar clouds. This is believed to be due to the hydrogen scarcity of some of these clouds.".
- Cyanopolyyne label "Cyanopolyyne".
- Cyanopolyyne sameAs Q786520.
- Cyanopolyyne sameAs Cyanopolyyne.
- Cyanopolyyne sameAs m.09rvr0v.
- Cyanopolyyne sameAs Q786520.
- Cyanopolyyne wasDerivedFrom Cyanopolyyne?oldid=703054392.
- Cyanopolyyne isPrimaryTopicOf Cyanopolyyne.