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

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

Interpreting the infrared spectrum of 1,2-dimethylbenzene

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 1,2-dimethylbenzene

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 1,2-dimethylbenzene wavenumbers cm-1 functional group detection fingerprint pattern identification of ortho-xylene doc brown's advanced organic chemistry revision notes 

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

1,2-dimethylbenzene, C6H4(CH3)2 , C8H10, (c) doc b , (c) doc b

Interpretation of the infrared spectrum of 1,2-dimethylbenzene

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

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.

C-H side-chain alkyl vibrations are observed at wavenumbers 1470 to 1370 cm-1.

Other aryl C-H vibration absorptions occur at wavenumbers 770 to 735 cm-1 characteristic of a disubstituted benzene ring.

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

Key words & phrases: C8H10 C6H4(CH3)2 image and diagram explaining the infrared spectrum of 1,2-dimethylbenzene, complete infrared absorption spectrum of 1,2-dimethylbenzene, comparative spectra of 1,2-dimethylbenzene, prominent peaks/troughs for identifying functional groups in the infrared spectrum of 1,2-dimethylbenzene, important wavenumber values in cm-1 for peaks/troughs in the infrared spectrum of 1,2-dimethylbenzene, revision of infrared spectroscopy of 1,2-dimethylbenzene, fingerprint region analysis of 1,2-dimethylbenzene, how to identify 1,2-dimethylbenzene from its infrared spectrum, identifying organic compounds like 1,2-dimethylbenzene from their infrared spectrum, how to analyse the absorption bands in the infrared spectrum of 1,2-dimethylbenzene detection of ? functional groups in the 1,2-dimethylbenzene molecule example of the infrared spectrum of a molecule like 1,2-dimethylbenzene with a functional group ortho-xylene  interpreting interpretation of the infrared spectrum of 1,2-dimethylbenzene shows presence of o-xylene functional group

Links associated with 1,2-dimethylbenzene

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: