Difference between H-NMR with C$^{13}$ and C$^{13}$- NMR [closed]








**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
 
 






---








 **Homework questions** must demonstrate some effort to understand the underlying concepts. For help asking a good homework question, see: [How do I ask homework questions on Chemistry Stack Exchange?](https://chemistry.meta.stackexchange.com/questions/141/how-do-i-ask-homework-questions-on-chemistry-stack-exchange)




Closed 3 years ago.








[Improve this question](/posts/128888/edit) 



I don't know if I am overcomplicating things but I am having trouble understanding the difference between H-NMR with C$^{13}$ sample and C$^{13}$-NMR. 


For example, if I have the molecule below and I am asked to sketch the H-NMR spectrum knowing that the carbons are C$^{13}$ and a C$^{13}$-NMR spectrum, what is the difference? For the C$^{13}$-spectrum I know that I should look at the neighbouring carbons and apply the $n+1$ rule and then look at the neighbouring hydrogens of the carbon of interest. For example, the C$^α$ has two neighbouring carbons so is split into a triplet and it also has one neighbouring hydrogen so those triplets are split into doublets making the C$^α$ show up as a multiplet of six. 


[![enter image description here](https://i.stack.imgur.com/qR10d.png)](https://i.stack.imgur.com/qR10d.png)


However, if it is a H-spectrum with C$^{13}$ what do I look at? The correct spectrum is added below and the chemical shifts are: 
[![enter image description here](https://i.stack.imgur.com/Hp2zv.png)](https://i.stack.imgur.com/Hp2zv.png)


So for H$^α$ I should get $2 \*5 $ peaks. Which I get from H$^α$ having one carbon neighbour (spliting it into a doublet) and then having four neighbouring hydrogens (spliting each doublet into a multiplet of five). Is that the correct way of doing it? It works for H$^β$ as well but then for the H$^N$ am I only looking at the hydrogens again (so $n+1=1+1=2$ a doublet)?


[![enter image description here](https://i.stack.imgur.com/xF8p8.png)](https://i.stack.imgur.com/xF8p8.png)


