Molecular Parameters for H2C6 (hexapentaenylidene)

NRAO National Radio Astronomy Observatory


Laboratory measurements of this cumulene carbene sequence member by M. C. McCarthy, M. J. Travers, A. Kov\'acs, Wei Chen, S. E. Novick, C. A. Gottlieb, and P. Thaddeus, Science Vol 275. p. 518 (24 January 1997)


  • Approximate Structure:
    H2C=C=C=C=C=C:
  • Singlet Electronic Ground State
  • A = 268400 MHz
  • B = 1348.0891(1) MHz
  • C = 1341.3529(1) MHz
  • DJ x 103 = 0.0283 (12) MHz
  • DJK = 0.0164(1) MHz
  • Dipole Moment 6.2 Debye (est.)


    • Interstellar detection noted as W. D. Langer et al. in preparation.


    Back to the Known Interstellar Molecules Page