Magic-angle turning with double acquisition

Tatsuya Matsunaga; K Takegoshi

doi:10.1016/j.jmr.2016.10.017

Magic-angle turning with double acquisition

J Magn Reson. 2017 Jan:274:1-6. doi: 10.1016/j.jmr.2016.10.017. Epub 2016 Nov 1.

Authors

Tatsuya Matsunaga¹, K Takegoshi²

Affiliations

¹ Division of Chemistry, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.
² Division of Chemistry, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan. Electronic address: takeyan@kuchem.kyoto-u.ac.jp.

PMID: 27835747
DOI: 10.1016/j.jmr.2016.10.017

Abstract

The double-acquisition scheme for efficient data collection of hypercomplex data (the States method) of a two-dimensional experiment is adopted to magic-angle hopping (MAH) and magic-angle turning (MAT) experiments, which are powerful methods to measure the principal values of the chemical shift anisotropy (CSA) in a powder sample. It is shown that the double acquisition MAT (DAMAT) sequence realizes the S/N ratio comparable to or better than those of other variants of the MAH/MAT sequences. In addition, we show that DAMAT has preferable features that there are no spinning sidebands in the indirect dimension, and no spectral shearing is necessary.

Keywords: Double acquisition; High resolution solid state NMR; Magic-Angle Turning (MAT).