NMR Flashcards
1
Q
What is the most common solvent used for non polar organic molecules
A
CCL4
2
Q
Why is TMS (si) used
A
- it only gives one signal which is further away from all other H signals
- it gives a strong signal so only a small amount needed
- it is non toxic
- it is inert
- low boiling point so can be removed from sample easily
3
Q
What is the most common solvent used for polar organic molecules
A
CDCl3
4
Q
What does the number of peaks represent
A
The number of carbon environments
5
Q
What does the integration number tell you
A
Add them all up
That will tell you the total number of hydrogens in your molecule
6
Q
What is the rule for the splitting pattern
A
Tells you how many hydrogens attached to the adjacent carbon
- singlet = 0
- doublet = 1
- Triplet = 2
- Quartet = 3
7
Q
Why are CDCL3 and CCL4 used as solvents
A
Have no H atoms tied to either CDCL3 or CCl4
