THE EMISSION SPECTRUM OF THE CCI RADICAL

Abstract

A rotational analysis of the 2780 Å emission band obtained in a microwave discharge through CCl₄ vapor and photographed on a 20-ft grating spectrograph shows that a ²Δ_i(b) → ²Π_r(a) transition of the CCl radical is responsible, not ²Σ → ²Π(a) as reported by previous workers. Molecular constants are given for the combining states, as well as a vibrational analysis that identifies the 2780 Å band as the (0–0) band.