1,2,3-Triazabutadiene. XI. Untersuchungen zur iod-sensibilisierten Fotoisomerisierung von 1-Aryl-3-(3-methyl-benzthiazolin-2-yliden) triazenen

✍ Scribed by Dr. W. Ortmann; Prof. Dr. E. Fanghänel

• Publisher: John Wiley and Sons
• Year: 1980
• Tongue: English
• Weight: 314 KB
• Volume: 322
• Category: Article
• ISSN: 1615-4150
• DOI: 10.1002/prac.19803220308

✦ Synopsis

1,2,3‐Triazabutadienes. XI. Investigation of the Iodine‐induced Photoisomerization of 1‐Aryl‐3‐(3‐methyl‐benzthiazolin‐2‐yliden) triazenes

cis‐1‐Aryl‐3‐(3‐methyl‐benzthiazolin‐2‐yliden)triazenes isomerize induced photo‐chemically by iodine to the trans‐isomer. The wavelength of the used irradiation light was 546 nm so that only I~2~ absorb. The dependence of the quantum yields on the concentration of the cis‐isomer and on the intensity of the irradiation light was investigated. The influence of the light intensity on the quantum yields shows, that the primary step is the dissoziation of I~2~‐molecules to I·‐ radicals, which induce the isomerization.