IR Presentation By John H. Penn Visualization of Vibrations - PowerPoint PPT Presentation

Nov 09, 2023 •192 likes •348 views

IR Presentation By John H. Penn Visualization of Vibrations Methyl amine (all 15 vibrations) http://cheminf.cmbi.ru.nl/wetche/organic/vibr/ H2O, CO2, and Adamantane http://www.chm.bris.ac.uk/jmol/jmolv/vibrating

IR Presentation By John H. Penn
Visualization of Vibrations • Methyl amine (all 15 vibrations) – http://cheminf.cmbi.ru.nl/wetche/organic/vibr/ • H2O, CO2, and Adamantane – http://www.chm.bris.ac.uk/jmol/jmolv/vibrating mols/vibmenu.htm • Quite a few molecules – http://www.molwave.com/software/3dnormalm odes/3dnormalmodes.htm
Cyclohexane
1-Propanol OH
Propanenitrile C N
Cyclohexanone O
Heptanoic acid OH O
OH Ethanoic acid O
2-Methylpentanal H O
OMe Methyl Ethanoate O
Interpreting IR Spectra Major Functional Groups Alcohol Nitrile Amine Carbonyl Group 3400-3600 cm -1 2220-2260 cm -1 3200-3400 cm -1 1650-1780 cm -1 No Other Features Ketone OH group C-H Shoulder C-O Stretch 3400-3600 cm-1 Exactly 2750 cm -1 1050-1250 cm-1 Broad Aldehyde Ester Carboxylic Acid
What functional groups?
What functional groups?
What functional groups?
What functional groups?

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