磁共 H C—C (signal in the absence Hb of protons H, or Hb HH C-C-C- Protons of Hh plit the signal into a 1: 2: 1 possible magnetic orientations Jab>k triplet. of protons of H,)5 f Applied field, Bo FIGURE 13 22 Two equivalent protons(Hb) on an adjacent carbon atom split the signal from H, into a 1: 2: 1 triplet