Furthermore, there is an obvious trend that more branched alkyl groups show a higher shielding effect, which can be attributed to a greater number of specific bonds participating in the overall effect.
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Application of <sup><b>19</b></sup>F NMR Spectroscopy for Determining the Absolute Configuration of α-Chiral Amines and Secondary Alcohols Using Trifluoromethylbenzoimidazolylbenzoic Acid.
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