Pneumatic switched angle spinning NMR probe with capacitively coupled double saddle coil.
Switched angle spinning (SAS) experiments can be used for generating isotropic-anisotropic correlations in oriented samples in a single experiment. In order for these methods to become widespread, specialized hardware is required. Here we describe the electronic and mechanical design and performance of a double-resonance SAS probe. Unlike many previous SAS probe implementations, the focus here is on systems where the dipolar couplings are partially averaged by molecular motion. This probe has a moving double saddle coil capacitively coupled to the stationary circuit. Angle switching is accomplished by a steam engine-type pneumatic mechanism. The speed and stability of the switching hardware for SAS experiments are demonstrated using spectra of model compounds.
Litvak
Ilya M
IM
Department of Chemistry, University of California, Irvine, CA 92697-2025, United States.
Espinosa
Catalina A
CA
Shapiro
Rebecca A
RA
Oldham
Andrew N
AN
Duong
Vincent V
VV
Martin
Rachel W
RW
D025802:Electric Capacitance; D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation*; D008280:Magnetics / Q000295:instrumentation*; D011312:Pressure; D014159:Transducers