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Advanced Organic Chemistry: Infrared spectrum of 1,1,2-trichloroethane

Interpreting the infrared spectrum of 1,1,2-trichloroethane

Doc Brown's Chemistry Advanced Level Pre-University Chemistry Revision Study Notes for UK IB KS5 A/AS GCE advanced A level organic chemistry students US K12 grade 11 grade 12 organic chemistry courses involving molecular spectroscopy analysing infrared spectra of 1,1,2-trichloroethane

infrared spectrum of 1,1,2-trichloroethane C2H3Cl3 Cl2CHCH2Cl wavenumbers cm-1 functional group detection fingerprint pattern identification of 1,1,2-trichloroethane doc brown's advanced organic chemistry revision notes 

Spectra obtained from a liquid film of 1,1,2-trichloroethane. The right-hand part of the of the infrared spectrum of 1,1,2-trichloroethane, wavenumbers ~1500 to 400 cm-1 is considered the fingerprint region for the identification of 1,1,2-trichloroethane and most organic compounds. It is due to a unique set of complex overlapping vibrations of the atoms of the molecule of 1,1,2-trichloroethane.

1,1,2-trichloroethane  Cl2CH-CH2Cl  or  CHCl2CH2Cl

Interpretation of the infrared spectrum of 1,1,2-trichloroethane

The most prominent infrared absorption lines of 1,1,2-trichloroethane

As with any molecule with an alkyl group in the molecule, C-H stretching vibrations occur at wavenumbers 2975 to 2845 cm-1 and 1470 to 1340 cm-1.

For 1,1,1-trichloroethane, there are series of C-Cl vibrations bands of various modes at wavenumbers 800 to 580 cm-1.

The absence of other specific functional group bands will show that a particular functional group is absent from the 1,1,2-trichloroethane molecular structure.

Key words & phrases: C2H3Cl3 Cl2CHCH2Cl CHCl2CH2Cl ClCH2CHCl2 CH2ClCHCl2 image and diagram explaining the infrared spectrum of 1,1,2-trichloroethane, complete infrared absorption spectrum of 1,1,2-trichloroethane, comparative spectra of 1,1,2-trichloroethane, prominent peaks/troughs for identifying functional groups in the infrared spectrum of 1,1,2-trichloroethane, important wavenumber values in cm-1 for peaks/troughs in the infrared spectrum of 1,1,2-trichloroethane, revision of infrared spectroscopy of 1,1,2-trichloroethane, fingerprint region analysis of 1,1,2-trichloroethane, how to identify 1,1,2-trichloroethane from its infrared spectrum, identifying organic compounds like 1,1,2-trichloroethane from their infrared spectrum, how to analyse the absorption bands in the infrared spectrum of 1,1,2-trichloroethane detection of functional groups in the 1,1,2-trichloroethane molecule example of the infrared spectrum of a molecule like 1,1,2-trichloroethane with a functional group  interpreting interpretation of the infrared spectrum of 1,1,2-trichloroethane shows presence of functional group formula old names functional group

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