Infrahyphen;Red and Raman Spectra of Polyatomic Molecules IX. Dimethyl Acetylene, C4H6

摘要

The infra‐red absorption of gaseous C4H6has been measured from 2 to 24&mgr;, and the Raman spectrum of the liquid studied. Analysis of the data permits the determination of all the fundamental frequencies of the molecule. The frequencies are fitted closely with a modified valence‐force potential function in which the methyl‐group force constants are those previously determined for ethane.