structure elucidation Flashcards
(5 cards)
1
Q
what are isomers?
A
two molecules that have the same atoms but differ so they aren’t superimposable on one another due to:
- different bonding w/in molecule
- similar bonding but different 3-d distribution about a stereogenic center
- different conformational orientation
2
Q
what is IR used to find?
A
functional groups, symmetry, carbon hybridization, H-bonding groups
3
Q
what is UV-vis used to find?
A
pi bonds and conjugation within a molecule
4
Q
what is NMR used to find?
A
molecular connectivity & specific structural features (Carbon skeleton, stereoisomers & exact functional group positions)
5
Q
what is mass spectroscopy used to find?
A
primarily, symmetry
