Dipole moments of terminal diacetylenes in the gaseous phase

H. J.G. Hayman, Shmuel Weiss

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The dipole moments of four terminal diacetylenes and three terminal monoacetylenes were measured in the gaseous phase at 35°C using a high-precision heterodyne beat apparatus. The results obtained were interpreted in terms of primary and induced bond moments on the assumption that the above compounds exist as equilibrium mixtures of rotational isomers corresponding to Irans and gauche conformations of the various C-C bonds. The composition of these equilibrium mixtures of rotational isomers was assumed to depend on a single parameter expressing the relative stability of gauche and trans conformations. The value of this parameter found from our results agreed satisfactorily with the results obtained by Kartell and Kohl from electron-diffraction measurements on n-paraffins.

Original languageEnglish
Pages (from-to)3701-3706
Number of pages6
JournalJournal of Chemical Physics
Issue number10
StatePublished - 1 Jan 1965
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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