Common Solvents and Impurities

As we pointed out earlier, it is a good idea if you can eliminate peaks from common solvents and impurities before getting into the real interpretation (note how chemical shifts can vary in different solvents - another factor which helps define the breadth of the confidence curve). Table 5.1 can be very helpful in this regard. 

Note The peaks listed are singlets, unless described as doublets (d), triplets (t), quartets (q), or multiplets (m). Coupling constants (in Hz) are given in parentheses. 

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Table 5.1 The proton chemical shifts of common solvents and impurities.

Chemical Shift Data for Common Solvents and Impurities in CDCI3... 

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