Magnetic Circular Dichroism and Induced Circular Dichroism Spectra of N-Bromophthalimide

✍ Scribed by Syuuta Najiwara; Masahiro Kawamura; Hiroyuki Yamaguchi; Miwako Higashi; Toshitaka Terasaka

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: German
• Weight: 58 KB
• Volume: 83
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/1522-2675(20001004)83:10<2783::aid-hlca2783>3.0.co;2-u

✦ Synopsis

The magnetic circular dichroism (MCD), induced circular dichroism (ICD) spectra, and the absorption spectra of N-bromophthalimide have been measured. The ICD spectrum of the b-cyclodextrin complex with Nbromophthalimide is also reported. The absorption bands of N-bromophthalimide are assigned.

Introduction. ± The electronic structure of N-bromophthalimide has not yet been clarified. The magnetic circular dichroism (MCD) technique has been used by several authors for the elucidation of complicated electronic spectra [1 ± 6]. Recently, the ICD of the b-cyclodextrin complex has been shown to be a very simple tool for the assignment of absorption spectra [7 ± 9].

Polarization investigations have also proved to be powerful in the determination of the symmetries of excited-state wave functions and in studying electronic interactions such as vibronic and spin-orbit coupling [10] [11]. Therefore, we have investigated the polarization of the absorption bands of N-bromophthalimide by measuring its MCD spectrum and the ICD spectrum of its b-cyclodextrin complex.