Embedded Files
Are all functional groups in your IR tables?
Are all functional groups in your IR tables?
CARVONE
Alkane
Ketone, conjugated
Alkene, conjugated, trisubstituted
Alkene, saturated, symmetric disubstituted
METHYL SALICYLATE
Alcohol
Ester, conjugated
Arene, ortho-disubstituted
ASPIRIN
Ester, saturated
Carboxylic acid, conjugated
Arene, ortho-disubstituted
Learning Objectives
Learning Objectives
· Understand principles behind IR Spectroscopy as it relates to the stretching & bending of bonds
· Observe the inverse relationship between vibrational frequency and bond length
· Analyze spectra to predict functional groups and bonds in an organic molecule
· Understand the role resonance plays in vibrational frequencies
· Observe effects on sample preparation on quality of spectra
Assessment Components - To-Do list
Assessment Components - To-Do list
Exp 4 Pre-lab quiz - take on Canvas if you haven't already
Submit the Exp 4 lab notebook pages with IR Problem Set individually on GradeScope
Remote students: Office hour attendance is required for credit on the Exp 4 lab report
You and your partner complete the lab report (IR tables & in-lab question, and problem set) together per your Partner Agreement
Full details in the Exp 4 PDF on Canvas, due date in syllabus
Exp 4 Lab Notebook Checklist
Exp 4 Lab Notebook Checklist
Observations from IR videos, notes about incorrect sample preparation
Three completed IR tables - one for each compound - with the structure and column headings
Functional Group
Bond assignment
Expected wavenumber range
Literature wavenumber
Observed wavenumber
IR Problem Set
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