The two protons H a and H b in 1,2,3-trichloropropane have slightly different chemical shifts, and the
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The two protons Ha and Hb in 1,2,3-trichloropropane have slightly different chemical shifts, and the splitting pattern of each is a doublet of doublets. For one proton, J 5 9.0 Hz and 4.9 Hz; for the other, J 5 9.0 Hz and 6.0 Hz.
(a) Explain why Ha and Hb have different chemical shifts.
(b) Explain why the splitting pattern for each proton is a doublet of doublets.
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Cl Ha Hb Ha Hb CI H CI 1,2,3-trichloropropane
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a Protons a and b are diastereotopic protons and thus give different chemical shifts as dis...View the full answer
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