| A | B |
|---|
| EM radiatoin | light and other forms fo radiant E |
| molecular spectroscopy | study of which frequencies of EM radiation are absorbed or emitted by substances and the correlation b/w these frequencies and specific types of molecular structure |
| vibrational infared region | portion of the infared region that extends from 4000 to 400 cm-1 |
| infared spectroscopy | technique in which a compound is irradiated with infared radiation, absorption of which causes covalent bonds to change froma lower vibrational E level to a higher one; IR spec is good for det a molec's functional groups |
| wavenumber | frequencty of EM radiation expressed as the number of waves per cm |
| fingerprint region | portion of the vibrational infared region that extends from 1000 to 400 cm-1 |
| conjugation | situation in which multiple conds aer separated by a single bond; a series of overlapping p orbitals; 1,3-butadiene is a conjugated diene; 3-buten-2-one is a conjugated enone |
| infared active | bond must be polar, and its vibration must change the dipole moment fo the bond |
