(a) In the 1H NMR spectrum of compound 3.11, there is a triplet at δ 3.60 ppm (J 10.4 Hz)....

(a) In the 1H NMR spectrum of compound 3.11, there is a triplet at δ 3.60 ppm (J 10.4 Hz). Assign the signal and explain the origin of the coupling. What would you observe in the 31P{1H} NMR spectrum of compound 3.11?

(b) Figure 3.16 shows the solid state structure of a phosphorus-containing cation. The 31P NMR spectrum of a CDCI3 solution of the [CF3S03]– salt was recorded. How many signals (ignore spin-spin coupling) would you expect to see in the spectrum, assuming that the solid state structure is retained in solution?