Octatetraynyl radical

Octatetraynyl radical

Skeletal formula of the octatetraynyl radical with the explicit hydrogen added
Names
Preferred IUPAC name Octa-1,3,5,7-tetrayn-1-yl
Identifiers
3D model (JSmol)	Interactive image anion: Interactive image
ChemSpider	10809239  Y
PubChem CID	57417316 anion: 100986430
InChI InChI=1S/C8H/c1-3-5-7-8-6-4-2/h1H Y Key: GTEOCQSGHJLKQX-UHFFFAOYSA-N Y anion:InChI=1S/C8H/c1-3-5-7-8-6-4-2/h1H/q-1 Key: JPYHXIJMECKQLV-UHFFFAOYSA-N
SMILES [C]#CC#CC#CC#C anion:[C-]#CC#CC#CC#C
Properties
Chemical formula	C8H
Molar mass	97.096 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y  verify  (what is  YN ?) Infobox references

Octatetraynyl radical (C₈H) is an organic free radical with eight carbon atoms linked in a linear chain with alternating single bonds and triple bonds (H−C≡C−C≡C−C≡C−C≡C•).

In 2007 negatively charged octatetraynyl was detected in Galactic molecular source TMC-1, making it the second type of anion to be found in the interstellar medium (after hexatriynyl radical) and the largest such molecule detected to date. ^{[1] [2]}

References

1. Remijan, Anthony J.; J. M. Hollis; F. J. Lovas; M. A. Cordiner; T. J. Millar; A. J. Markwick-Kemper; P. R. Jewell (July 20, 2007). "Detection of C₈H⁻ and Comparison with C₈H toward IRC +10 216". The Astrophysical Journal. 664 (1): L47 –L50. Bibcode:2007ApJ...664L..47R. doi: 10.1086/520704 .
2. Brünken, S.; H. Gupta; C. A. Gottlieb; M. C. McCarthy; P. Thaddeus (July 20, 2007). "Detection of the Carbon Chain Negative Ion C₈H⁻ in TMC-1". The Astrophysical Journal. 664 (1): L43 –L46. Bibcode:2007ApJ...664L..43B. doi:10.1086/520703. S2CID   120912943.