Advanced Organic Chemistry: Carbon-13 NMR spectrum of 1,1,2-trichloroethane

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Interpreting the Carbon-13 NMR spectrum of 1,1,2-trichloroethane

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C-13 NMR spectroscopy - spectra index

13C nmr spectrum of 1,1,2-trichloroethane C2H3Cl3 Cl2CHCH2Cl analysis of chemical shifts ppm interpretation of C-13 chemical shifts ppm of 1,1,2-trichloroethane 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 resonances, called chemical shifts, are measured with respect to the TMS, and depend on the individual (electronic) chemical environment of the 13C atoms in an organic molecule - 1,1,2-trichloroethane here.

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

Interpreting the C-13 NMR spectrum of 1,1,2-trichloroethane

As you can see from the diagram above there are 2 different chemical shift lines in the C-13 NMR spectrum of 1,1,2-trichloroethane indicating 2 different chemical environments of the 2 carbon atoms of 1,1,2-trichloroethane.

Cl2CH-CH2Cl  or  CHCl2CH2Cl

(Note the 2 different colours indicating the 2 different chemical environments of the 2 carbon atoms in 1,1,2-trichloroethane).

13C chemical shift (a) on the C-13 NMR spectrum diagram for 1,1,2-trichloroethane.

The carbon-13 NMR spectra provides direct evidence of 2 different carbon atom environments for the 2 carbon atoms in the 1,1,2-trichloroethane molecule, deduced from the presence of 2 different 13C NMR chemical shifts (ppm).

Key words & phrases: C2H3Cl3 Cl2CHCH2Cl CHCl2CH2Cl ClCH2CHCl2 CH2ClCHCl2 Interpreting the C-13 NMR spectra of 1,1,2-trichloroethane, C-13 nmr spectrum of 1,1,2-trichloroethane, understanding the carbon-13 nmr spectrum of 1,1,2-trichloroethane, explaining the line pattern in the high resolution C-13 nmr spectra of 1,1,2-trichloroethane, revising the C-13 nmr spectrum of 1,1,2-trichloroethane, ppm chemical shifts of the C-13 nmr spectrum of 1,1,2-trichloroethane, how to construct the diagram of the C-13 nmr spectrum of 1,1,2-trichloroethane, how to analyse the chemical shifts in the carbon-13 NMR spectrum of 1,1,2-trichloroethane deducing the chemical environment of all the carbon atoms in 1,1,2-trichloroethane examining the c13 nmr spectrum of  1,1,2-trichloroethane analysing the 13-c nmr spectrum of 1,1,2-trichloroethane how do you sketch and interpret the C-13 NMR spectrum of 1,1,2-trichloroethane interpreting interpretation of the C-13 NMR spectrum of 1,1,2-trichloroethane assignment of chemical shifts in the 13C NMR spectrum of 1,1,2-trichloroethane type functional group old names

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