1H NMR spectroscopy

Question 1

What do the peaks in 1H NMR spectroscopy show you?

Answer 1

How many different H environments there are

Question 2

What does the ratio of peaks in 1H NMR spectroscopy give you an idea of?

Answer 2

How many different protons there are in each environment

Question 3

What is an integration trace?

Answer 3

Clearly shows the ratios

The height increases shown on the integration trace are proportional to the areas of the peaks

Question 4

Why are integration traces used?

Answer 4

1H NMR spectra can get cramped and become hard to interpret

Question 5

What are split peaks called?

Answer 5

Mulitplets

Question 6

What is the rule for working out how many splits there will be?

Answer 6

N+1

N = number of hydrogens on Neighbouring carbons

Question 7

What is a singlet?

Answer 7

No splits

No neighbouring hydrogens

Question 8

What is a doublet?

Answer 8

Split into 2

1 neighbouring hydrogen

Question 9

What is a triplet?

Answer 9

Split into 3

2 neighbouring hydrogens

Question 10

What is a quartet?

Answer 10

Split into 4

3 neighbouring hydrogens