NMR

Today we started NMR spectroscopy. We covered the basics of 13C NMR and were exposed to some basics: upfield and downfield, shielded and deshielded, TMS, ppm, etc. The major point was that every unique carbon atom will have a resonance peak in a 13C NMR spectrum. This means that the most important thing that a student must worry about is determining how many unique carbon atoms are in a compound.

We also looked at two special 13C NMR experiments, DEPT-90 (only shows CH's) and DEPT-135 (shows CH and CH3 peaks pointing up, CH2 peaks pointing down).