T h c magnetic circular dichroism spectra of a numbcr of indolc alkaloids show two B-tcrms of opposite sign in thc 250-330 nni wavelength region associated with the l L b and lL, clectronic transitions, thc long ivavelength, lLt,, band being of positive sign, whereas both bands strongly ovcrlap in a
Magnetic Circular Dichroism and Absorption Spectra of 2-Methyl-1, 3-diazaazulene
✍ Scribed by Hiroyuki Yamaguchi; Masafumi Ata; Koichi Toyoda; Hiroaki Mametsuka; Hitoshi Takeshita; Harold Baumann
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- German
- Weight
- 262 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
The magnetic circular dichroism and UV. spectra of 2‐methyl‐1, 3‐diazaazulene (2) have been measured. The UV. spectrum is interpreted by making use of CNDO/S MO CI calculations. Our assignment of the first and second absorption band coincides with one of the corresponding bands of 1, 3‐diazaazulene (1) given by Small & Burke. The third and fourth absorption bands are in agreement with those published by Hiratsuka et al. and Tanizaki et al. for 1 and 2‐ethoxy‐1, 3‐diazaazulene, respectively.
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