ORSAT and modifications of SEFT and APT |
| |
Authors: | Beckmann U Dietrich W Radeglia R |
| |
Affiliation: | Ruhr-Universit?t Bochum, Germany. |
| |
Abstract: | Up to now, three subspectra are usually needed for the complete assignment of all signals in 13C spectrum: two DEPT spectra (phi = 90 degrees and phi = 135 degrees) and a proton decoupled spectrum. In this paper, we present a method in which a complete assignment becomes possible with merely two spectra. For this purpose, a new pulse sequence (ORSAT) has been elaborated by using off-resonance irradiation. The method described here is a further development of SEFT and APT. The second required spectrum is a DEPT (phi = 135 degrees). Signal assignment of cholesteryl acetate is demonstrated as an example. 13C routine spectroscopy can be significantly accelerated by applying this method. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|