Splitting of a signal m a proton NMR spectrum tells us the number of chemically

Question

Splitting of a signal m a proton NMR spectrum tells us the number of chemically non-equivalent hydrogen's in the immediate vicinity of the hydrogen giving the signal Predict the number of In by hydrogen's at the labeled positions in a first-order NMR spectrum. (Make the approximation that all coupling constants are equal) The number of lines exhibited by hydrogen(s) a is The number of lines exhibited by hydrogen (s) b is The number of lines exhibited by hydrogen c is The number of lines exhibited by hydrogen The number of lines exhibited by hydrogen(a) b is The number of lanes exhibited by hydrogen more group attempts remaining

Explanation / Answer

In NMR the peaks can be calculated on the basis on n+1 rule, where n is the total number of proton in the vicinity

1. For a the lines should be 2

for b lines should be 9

for c lines should be 4

2.

For a the lines should be 8

for b lines should be 5

for c lines should be 2

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