HOME PAGE * KS3 SCIENCES * GCSE BIOLOGY CHEMISTRY PHYSICS * ADVANCED LEVEL CHEMISTRY

SPECTROSCOPY INDEXES  *  All Advanced Organic Chemistry Notes  *  [SEARCH BOX]

Advanced Organic Chemistry: Carbon-13 NMR spectrum of chlorobenzene

Scroll down and take time to study the content and/or follow links or [Use the website search box]

The Carbon-13 NMR spectrum of chlorobenzene

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 C-13 NMR spectra of chlorobenzene

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

C-13 NMR spectroscopy - spectra index

C6H5Cl C-13 nmr spectrum of chlorobenzene analysis of chemical shifts ppm interpretation of 13C chemical shifts ppm of chlorobenzene C13 13-C nmr doc brown's advanced organic chemistry revision notes 

TMS is the acronym for tetramethylsilane, formula Si(CH3)4, whose 13C atoms are arbitrarily given a chemical shift of 0.0 ppm. This is the 'standard' in 13C NMR spectroscopy and all other 13C shifts, called chemical shifts, depend on the individual (electronic) chemical environment of the 13C atoms in an organic molecule - chlorobenzene here.

chlorobenzene, C6H5Cl, (c) doc b 

Interpreting the C-13 NMR spectrum of chlorobenzene

As you can see from the diagram above there are 4 different chemical shift lines in the C-13 NMR spectrum of chlorobenzene indicating 4 different chemical environments of the carbon atoms.

Chemical shifts (a) to (d) on the C-13 NMR spectrum diagram for chlorobenzene.

These are all due to the benzene ring (no side-chain carbons).

Very high resolution spectrum sorts them out.

13C resonance (a) is for ring carbon atom 4, 126.4 ppm.

13C resonance (b) is for ring carbon atoms 3 and 5, 129.7 ppm.

13C resonance (c) is for ring carbon atoms 2 and 6, 128.6 ppm.

13C resonance (d) is for ring carbon atom 1, 134.3 ppm.

The carbon-13 NMR spectra a provides direct evidence of 4 different carbon atom environments of the 6 carbon atoms of the chlorobenzene molecule from 4 different 13C chemical shifts (ppm).


Key words & phrases: C6H5Cl Interpreting the C-13 NMR spectra of chlorobenzene, C-13 nmr spectrum of chlorobenzene, understanding the carbon-13 nmr spectrum of chlorobenzene, explaining the line pattern in the high resolution C-13 nmr spectra of chlorobenzene, revising the C-13 nmr spectrum of chlorobenzene, ppm chemical shifts of the C-13 nmr spectrum of chlorobenzene, how to construct the diagram of the C-13 nmr spectrum of chlorobenzene, how to analyse the chemical shifts in the carbon-13 NMR spectrum of chlorobenzene deducing the chemical environment of all the carbon atoms in chlorobenzene examining the c13 nmr spectrum of  chlorobenzene analysing the 13-c nmr spectrum of chlorobenzene how do you sketch and interpret the C-13 NMR spectrum of chlorobenzene interpreting interpretation of the C-13 NMR spectrum of chlorobenzene 13C NMR spectrum of chlorobenzene


Links associated with chlorobenzene

The chemistry of AROMATIC COMPOUNDS revision notes INDEX

C-13 NMR spectroscopy index

ALL SPECTROSCOPY INDEXES

All Advanced Organic Chemistry Notes

Use My Google search site box

Email doc b: chem55555@hotmail.com

 Doc Brown's Chemistry 

*

TOP OF PAGE