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Unformatted text preview: The single unpaired proton goes into a 1p 3/2 level. Here the proton spin has added to the ordital spin. Hence gamma has the same sign as that of the proton - positive S=3/2 N-15 has 7 protons, 8 neutrons. Again all neutrons are paired so we only consider protons. The single unpaired proton ends up in the 1p level. Here the proton spin has subtracted from the orbital part, so the moment is opposite in sign from the proton, Hence, gamma is negative, S=1/2. In both cases predictions agree with experiment. 3) The difference in precession frequency is (2.6752x10^8 x 11.7 x (60-55.2) x 10^-6)/2pi, or 2391Hz. The methyl resonance is 4.8 ppm upfiled of the OH resonance....
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- Fall '11