Figure 2. IR spectra of 1 and 2 isolated in Ar matrix (12 K). of 5 appear. The colorless species remains detectable by IR up to 90 K. After warming to room temperature, the only two major products are the methanol adducts 5 and 6 (capillary column GLC, DB-17-01, comparison with authentic samples2). When the red species was first destroyed by irradiation, leaving the colorless one intact, and the methanol-doped argon matrix was ...