Spectroscopy Flashcards
0
Q
What is TMS used for?
A
The standard for chemical shift measurements
1
Q
NMR spectroscopy involves interaction of materials with what?
A
The low-energy radiowave region of the electromagnetic spectrum
2
Q
What are deuterated solvents, such as CDCl3 needed for in NMR?
A
It doesn’t contain hydrogen or carbon so they don’t show peaks on spectra.
3
Q
How do we identify O-H and N-H protons?
A
- proton exchange using D2O
- HNMR spectrum is run
- then small amount of D2O is added and shaken
- second spectrum run
- any peak due to OH or NH proton disappears
- deuterium exchanges with H present in OH and NH
4
Q
How is NMR used in medicine?
A
Same technology used in MRIs to obtain diagnostic information about internal structures in body scanners
