>>7588169 mass spec coupled to lc is the best way to follow most experiments (unless your pdt is not uv active).
You can get a better NMR by learning to shim the magnet and then apodizing your spectrum (For a 400 MHz magnet, use 0.4 Hz of exponential line broadening, zero fill to the largest possible value that your computer's ram can deal with, and always do a polynomial baseline correction). In order, this will give you a resolution increase, signal to noise increase, and a correction to your integrations.
>>7589899 NMR problems? I assume you mean "given this spectrum, what is the target species?"
I would look at the number of peaks in the aromatic region first. This will tell you how many protons that are on carbons in the conjugated systems (PROTIP: always reference with WELL RESOLVED ALKYL PROTONS if you can. Aromatic peaks tend to have more aberrations). After the aromatics, look at the alkyl region for tell-tale signs of ethyl, methyl, isopropyl groups (triplet + quartet, bigass singlet, or loads of shit near 0.5-0 ppm; respectively). Then if you see things around 3-6.5 ppm try to work out if you have an ugly alkene or a nasty double bond somewhere that is causing trouble. Keep in mind that your water peak can move from 1.5 in proton and will often be sharp (most textbooks say that it is always a broad singlet at 1.5 ppm; in reality it can move up to around 4 ppm and be sharp if the target molecules stack and form a very stable lattice).
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