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128B%20protonNMRspectra

128B%20protonNMRspectra - It is customary to measure the...

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1 It is customary to measure the resonance frequency (signal) of individual nuclei relative to the resonance frequency (signal) of a reference compound --- tetramethylsilane (TMS) Tetramethylsilane (TMS) CH 3 Si CH 3 CH 3 H 3 C Chemical shift ( Chemical shift ( δ ): the shift in ppm of an NMR signal from the signal of TMS δ = Shift in frequency from TMS (Hz) Frequency of spectrometer (Hz) 1 H-NMR spectrum of methyl acetate
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