The 13C NMR Spectrum: Finding The Structure Of The Unknown
The 13C NMR spectrum was useful to help finding the structure of the unknown. It showed six different signals in the spectrum. Signal 1 had an observed peak value of 19.242 ppm, and its peak calculated value was 19.1 ppm. This signal was first to most upfield and shielded in the spectrum because of the high electron density of carbon. This signal was agreed to a literature value for a CH3 group between 5-30 ppm. Signal 2 was branched to signal 1, and had the same value, but it was agreed for the literature range for a CH2 group. Signal 3 had an observed peak value of 21.134 ppm and a calculated peak value of 20.8 ppm. This peak was agreed for the literature value range between 13.35 ppm. Signal 4 had an observed peak value of 27.826 ppm and