Advanced Organic Chemistry: Infrared spectrum of ethylbenzene

SITEMAP * HOME PAGE * SEARCH * GCSE Level Chemistry age ~14-16 * Advanced Level Chemistry age ~16-19

Interpreting the infrared spectrum of ethylbenzene

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 ethylbenzene

email doc brown

Use your mobile phone or ipad etc. in 'landscape' mode

This is a BIG website, you need to take time to explore it

Infrared spectroscopy - spectra index

C8H10 infrared spectrum of ethylbenzene wavenumbers cm-1 functional group detection fingerprint pattern identification of ethylbenzene doc brown's advanced organic chemistry revision notes 

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

Ethylbenzene, C8H10 , C6H5CH2CH3 , (c) doc b , (c) doc b

Interpretation of the infrared spectrum of ethylbenzene

The most prominent infrared absorption lines of ethylbenzene

Strong absorption at wavenumbers 3080 to 3030 cm-1 due to =C-H aryl C-H stretching vibrations.

Strong C-H stretching vibrations from the alkyl groups (CH2 and CH3) at wavenumbers 2975 to 2845 cm-1.

C=C benzene ring vibrations with peaks close to wavenumbers 1600 and 1500 cm-1.

Other aryl C-H vibration absorptions occur at wavenumbers 770 to 690 cm-1 characteristic of a monosubstituted benzene ring.

The absence of other specific functional group bands will show that particular functional group is absent from the ethylbenzene molecular structure.

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

Links associated with ethylbenzene

The chemistry of AROMATIC COMPOUNDS revision notes INDEX

Infrared spectroscopy index


All Advanced Organic Chemistry Notes

Use My Google search site box

Email doc b: