Optical Properties of Liquid Carbon Tetrachloride, n-Hexane, and Cyclohexane in the Vacuum Ultraviolet

The optical properties of three organic solvents, carbon tetrachloride, n‐hexane, and cyclohexane are reported from 2.0 to 10.65 eV. Reflectance measurements using a closed cell and transmission measurements using samples as thin as 800 Å were made to determine the optical constants, n and k. The optical absorption is interpreted in terms of molecular excitations of the nonbonding and $\sigma$ electrons.