How to distinguish and hexane by IR?
The next day, the exam had a terrifying spectrum: messy, noisy, with a strange peak at 2650 cm⁻¹. Students around him panicked. But Léo smiled softly. He remembered the PDF’s note: “Two weak peaks at 2720 and 2650? That’s the Fermi resonance of an aldehyde C-H. You’re looking at an aldehyde, not a ketone.”
How to distinguish and hexane by IR?
The next day, the exam had a terrifying spectrum: messy, noisy, with a strange peak at 2650 cm⁻¹. Students around him panicked. But Léo smiled softly. He remembered the PDF’s note: “Two weak peaks at 2720 and 2650? That’s the Fermi resonance of an aldehyde C-H. You’re looking at an aldehyde, not a ketone.” spectroscopie infrarouge cours et exercices corriges pdf