Orgo 1 - FTIR Basics Flashcards

Basic regions for FTIR

Hydrocarbon threshold FTIR

Pi bonds in carbon

For context of irrelevant peaks on FTIR - where are scisoring and umbrella for C-H

Medium peak around 1400 and 1500

Also to give context of irrelevance - where does the medium strength “C-H wag” show up

~700nm

In what cases do triple bonds, double bonds not show up in FTIR

Symmetry

What does Ar-H stretch mean?

Stretch of a carbon on an aromatic ring

Where does aromatic stretch happen? How intense is it?

Medium, around 1500

What does v on the FTIR table mean

Very intense

Give me a visual for the aromatic stretch

Carbonyl group peaks FTIR

Note: they are very strong

Tell me about fermi resonance. Where does it show up?

It is very characteristic of aldehydes, kind of has that double peak look

Alcohols and phenols

Different types of amine peaks

Visual of primary vs secondary amine graphs

Methyl group carbon stretch

Alcohols, phenols, carboxylic acids

Amines and nitriles