# $^{13}C$ MAGNETIC SHIELDING FROM BEAM MASER MEASURMENTS OF SPIN ROTATION INTERACTION IN $CH_{3}$ CN

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 Title: $^{13}C$ MAGNETIC SHIELDING FROM BEAM MASER MEASURMENTS OF SPIN ROTATION INTERACTION IN $CH_{3}$ CN Creators: Kukolich, Stephen G.; Lind, G.; Barfield, M.; Faehl, L.; Marshall, J. L. Issue Date: 1978 Publisher: Ohio State University Abstract: A beam maser spectrometer was used to make high resolution measurements (6 kHz f.w.h.m.) of $J=1\rightarrow 0$ transitions in $CH_{3}{^{13}}CN$. Spectra of $CH_{3}{^{12}}CN$. were obtained at higher resolution using Ramsey’s method of separated oscillating fields. Analysis of the spectra yielded values for quadrupole coupling, spin-rotation and spin-spin interaction strengths. The $^{13}C$ spin-rotation interaction strength was used to determine the paramagnetic contribution to the shielding tensor component $\sigma_{1}$. The diamagnetic contribution is obtained from molecular orbital calculations. Our results are compared with values obtained from liquid crystal and multiple pulse N.M.R. experiments. Description: Author Institution: Department of Chemistry, University of Arizona URI: http://hdl.handle.net/1811/10429 Other Identifiers: 1978-MG-07