Difference between revisions of "Chem341:NMR workshop/Exercise 4f"
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{For the right hand CH<sub>3</sub>, what is the multiplicity? | {For the right hand CH<sub>3</sub>, what is the multiplicity? | ||
|type="()"} | |type="()"} | ||
| − | + | - Zero | |
|| Wrong! Remember it's n+1 | || Wrong! Remember it's n+1 | ||
- 1 | - 1 | ||
| Line 31: | Line 31: | ||
- 2 | - 2 | ||
|| Wrong! Remember it's n+1 | || Wrong! Remember it's n+1 | ||
| − | + | + 3 | |
|| Correct! | || Correct! | ||
- 4 | - 4 | ||
| Line 38: | Line 38: | ||
{What do you call a peak with that multiplicity? | {What do you call a peak with that multiplicity? | ||
|type="()"} | |type="()"} | ||
| − | + | - singlet | |
|| Wrong! Look again... | || Wrong! Look again... | ||
- doublet | - doublet | ||
|| Wrong! Look again... | || Wrong! Look again... | ||
| − | + | + triplet | |
|| Correct! You successfully analyzed the first structure. | || Correct! You successfully analyzed the first structure. | ||
- quartet | - quartet | ||
|| Wrong! Look again... | || Wrong! Look again... | ||
- multiplet | - multiplet | ||
| − | || | + | || Not usually with such a low multiplicity, assuming the peak is clean. Look again... |
</quiz> | </quiz> | ||
Latest revision as of 00:27, 26 October 2009
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Now apply the n+1 rule from above to calculate the multiplicity, where n = the no. of Hs on neighboring carbons. <quiz> {For the right hand CH3, what is the multiplicity? |type="()"} - Zero || Wrong! Remember it's n+1 - 1 || Wrong! Remember it's n+1 - 2 || Wrong! Remember it's n+1 + 3 || Correct! - 4 || Wrong! Remember it's n+1
{What do you call a peak with that multiplicity? |type="()"} - singlet || Wrong! Look again... - doublet || Wrong! Look again... + triplet || Correct! You successfully analyzed the first structure. - quartet || Wrong! Look again... - multiplet || Not usually with such a low multiplicity, assuming the peak is clean. Look again...
</quiz>
Great! Now you can go back to the rest of Exercise 4.
