Infrared and electronic absorption spectra of some trisubstituted benzenes

✍ Scribed by Rekha Rao; M.K. Aralakkanavar; K.Suryanarayana Rao; M.A. Shashidhar

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 879 KB
• Volume: 45
• Category: Article
• ISSN: 1386-1425
• DOI: 10.1016/0584-8539(89)80110-2

✦ Synopsis

The electronic absorption spectra of 2,3-, 2,4-, 2,5-, 2,6-and3,4-difluorobenzonitriles, 3,4difluoroaniline and3,4-difluoroanisole in the ultraviolet region in vapour phase have been recorded on medium quartz and Hilger large quartz spectrographs and on a Hitachi model 150-20 UV-VIS ratio recording spectrophotometer. All the molecules investigated have exhibited two II* + II band systems corresponding to 'B,, + IAl, (A2600 A) and 'B,, + 'A,, (12100 A) systems of benzene. The infrared absorption spectra of all the molecules studied have also been recorded and analysed. These infrared data have been taken to help analyse the U.V. spectra of the molecules studied.