N,N-Diethylmethylamine as lineshape standard for NMR above 130 K

Author(s)
Fritzsching, Keith. J. , Itin, B.. and McDermott, Ann. E. #
Publisher
Journal of Magnetic Resonance
Year
2018
Volume
287
Pages
110-112
DOI
10.1016/j.jmr.2017.12.021
http://dx.doi.org/10.1016/j.jmr.2017.12.021

Abstract

We demonstrate that N,N-Diethylmethylamine (DEMA) is a useful compound for shimming the magnetic field when doing NMR experiments at room temperature and 130 K, near the temperature used in many dynamic nuclear polarization (DNP) experiments. The resonance assigned to the N-methyl carbon in DEMA at 14.7 T and 140 K has a full-width-half-max linewidth of <4 Hz and has a spin-lattice relaxation time of 0.17 ± 0.03 s.