A Novel Dipolar Dephasing Method for the Slow Magic Angle Turning Experiment

Journal Article · Sat Sep 01 00:00:00 EDT 2001 · Journal of Magnetic Resonance, 152(1):7-13

DOI:https://doi.org/10.1006/jmre.2001.2380· OSTI ID:1126386

Hu, Jian Zhi; Taylor, Craig M.; Pugmire, Ronald J.; Grant, David M.

Complete suppression of the resonances from protonated carbons in a slow magic angle spinning experiment can be achieved using five dipolar dephasing (Five-DD) periods distributed in one rotor period. This produces a spectrum containing only the spinning sidebands (SSB) from the nonprotonated carbons . It is shown that the SSB patterns corresponding to the noprotonated carbons are not distorted over a wide range of dipolar dephasing times. Hence, this method can be used to obtain reliable principal values of the chemical shift tensors for each nonprotonated carbon. The five-DD method can be readily incorporated into isotropic-anisotropic 2D experiments such as FIREMAT and 2D-PASS to facilitate the measurement of the 13 C chemical shift tensors in complex systems.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1126386
• Report Number(s): PNNL-SA-35489; KP1402010
• Journal Information: Journal of Magnetic Resonance, 152(1):7-13, Journal Name: Journal of Magnetic Resonance, 152(1):7-13
• Country of Publication: United States
• Language: English