Improved J-Compensated Apt Experiments |
| |
| Institution: | 1. Henan Engineering Research Center of Industrial Circulating Water Treatment, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, Henan University, Kaifeng 475004, PR China;2. LAQV and REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal |
| |
| Abstract: | The derivation and investigation of two new J-compensated attached-proton-test experiments, CAPT2 and CAPT3, are presented. These methods incorporate fewer pulses than CAPT and are shown to be more effective over a wider range of 1JCH than spin flip, APT, and CAPT for CH, CH2, and CH3 spin systems. In addition, the magnitude of the flip angle of the initial pulse which creates transverse carbon magnetization is unrestricted in CAPT2 and CAPT3. The compensated CAPT3 sequence, which is patterned after the 90°x90°y90°x composite pulse, is found to be excellent for routine use in 13C spectroscopy. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
