title: Improvements to the magic angle hopping experiment.
abstract: Several improvements to the magic angle hopping experiment first introduced by Bax et al. [J. Magn. Reson., 52 (1983) 147] are presented. A dc servo motor driven sample hopping mechanism which requires less than 60 ms to accomplish a 120 degrees sample rotation is described. Modifications to the data acquisition process, including starting the acquisition period immediately after the second hop and acquiring a hypercomplex data set, are also presented. Principal values of the 13C chemical shielding tensor are measured for 1,2,3-trimethoxybenzene and 2,6-dimethoxynaphthalene.
authors: Department of Chemistry, University of Utah, Salt Lake City 84112.
authors: J Z
authors: JZ
authors: Hu
authors: A M
authors: AM
authors: Orendt
authors: D W
authors: DW
authors: Alderman
authors: C
authors: C
authors: Ye
authors: R J
authors: RJ
authors: Pugmire
authors: D M
authors: DM
authors: Grant
mesh_terms: D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D010720:Phosphines / Q000737:chemistry*
chemical_list: D010720:Phosphines