Chlorine isotopic abundances were significantly altered by laser induced, selective excitation of particular isotopic species of thiophosgene followed by a chemical reaction between the electronically excited thiophosgene and diethoxyethylene. The concentration of35Cl in thiophosgene was changed from 75% to 64% or 80% depending upon the isotopic species initially excited. © 1975.
Lamotte, M., Dewey, H. J., Keller, R. A., & Ritter, J. J. (1975). Laser induced photochemical enrichment of chlorine isotopes. Chemical Physics Letters, 30(2), 165–170. https://doi.org/10.1016/0009-2614(75)80093-5