The ¹H NMR spectrum for the commonly employed reactant hydrochloride is shown below. Despite featuring only a few signals, this spectrum provides an interesting case of assignment through the use of multiplicities and coupling constants. Can you assign the signals and explain the observed differences in geminal coupling constants?

C3H;CIO 270 MHz 'H NMR spectrum in CDCI3 Source: Robert Morshauser/Reich digitized hard copy g H Hz 20 10 H CI- Hz 30 20 10 0 3.25 3.20 2.05 3.7 3.6 3.5 3.30 3.25 3.20 100 081.06 2.9 2.8 2.7 2.6 6.0 5.0 4.0 3.0 2.0 1.0 0.0 ppm