Which of the following protons gives an NMR signal with the highest chemical shift value (farthest downfield)? b $^c$ d e $CH_3$ H-C-O-CH$_2$CH$_2$CH$_3$ $CH_3$ a O a O b O c O d O e
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Chemical shift is a measure of the difference in resonance frequency of a proton compared to a reference compound (usually tetramethylsilane, TMS). It is influenced by the electron density around the proton and the local magnetic field. In general, protons that Show more…
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