IR Spectroscopy Wavenumbers Assignment and Interpretation
Explore the wavenumber assignments and interpretations in IR spectroscopy, focusing on NH stretching frequencies for primary and secondary amines along with C-N stretching and bending vibrations. Detailed analysis of bands in the 3400-3250 cm-1 and 1650-665 cm-1 regions is provided with illustrative slides.
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Presentation Transcript
: - 4 IR Wavenumber (cm-1) Assignement 3400 - 3250 Strectching N-H Primary amine Two bands : 3300 - 3400 and 3330 3250 1 bande : 3350 3310 Secondary amine No Tertiary amine 1650 - 1580 1335 - 1250 1250 -1020 910 - 665 Bending N-H (primary amine) stretching C-N (aromatic amine) stretching C-N (aliphatic amine) N-H Bending out of plane (Primary and secondary amines)
