Flashcards in Unit 3 - IR Deck (9)
What does Imfrared Spectroscopy do?
Provides information on all functional groups
How is wave number calculated?
What does the wave number of the absorbed ligh reveal?
Which functional groups are present in the molecule
How is vibration repeated to number of atoms?
Molecules with a greater number of atoms undergo more vibrations than molecules with fewer atoms
What is the formula for the number of vibrations in a molecule?
3n - 6
What leads to absorption of energy in IR?
Vibrations that change the dipole moment
What are IR inactive dipoles?
Vibrations that do not change the dipole moment
What is a greater intensity IR absorption associated with?
A greater change in the dipole