The torsional potential of 9,9'-bianthryl determined by laser-induced fluorescence in a free jet

✍ Scribed by Katsuyoshi Yamasaki; Koji Arita; Okitsugu Kajimoto; Kimihiko Hara

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 400 KB
• Volume: 123
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(86)80072-0

✦ Synopsis

The laser-induced fluorescence spectrum of 9.9'-bianthryl in a free Jet was recorded between 355 and ,375 nm. A characteristic banded structure with 11-16 cm-' spacing was observed in both the O-O and vibronic transtttons and was assigned to a progression due to the torsional motion of anthracene moieties around the 9.9'-axts. From the simulatton of the observed spectrum using a periodic potential of Internal rotation, the torsional angle in the S, state was derived to be 67 f 5". The O-O transition was estimated to be 374.7 nm (26686 cm-').