Rotation‐vibrational Raman spectra of gaseous allene‐1,1‐d₂

Abstract

Several rotation-vibrational bands of gaseous allene-1,l-d, have been studied by Raman spectroscopy and a number of molecular constants are obtained including the ground state constants A,-& = 2.9520* 0.0019 cm-' and D,= (3.3 f 0.6) x lo-' cm-'. A reassignment of the CD-stretching vibrations v, and vIz is proposed.

Vibrational dephasing of the ν3 mode of liquid allene

“…This is done by means of an autoregressive (AR) analysis that treats the memory function as a time series. According to this analysis, the memory function can be written in the form 6, exp ( -q , t ) cos ( f l , t -O , ) (9) 1 where i runs over the number of exponentiaI and damped-cosine terms. The number of exponential terms plus twice the number of cosine terms give a number p, where p is the smallest number that will give the best fit to K ( t ) .…”