Advanced Organic Chemistry: Carbon-13 NMR spectrum of 1,4-dioxane

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Interpreting and explaining the Carbon-13 NMR spectrum of 1,4-dioxane

[Author © Dr Phil Brown PhD: Doc Brown's advanced level organic chemistry exam revision notes suitable for students of UK A level chemistry courses & US K12 grade 11, grade 12 and AP honors chemistry courses: Molecular spectrometry - analysing the 13C NMR spectra of 1,4-dioxane [spectra page updated April 3rd 2026 *]

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 C-13 NMR spectroscopy - spectra index

Introductory note on the 13C NMR spectrum of 1,4-dioxane   

Students and teachers please note that my explanation of the carbon-13 NMR spectrum of 1,4-dioxane   is designed for advanced, but pre-university, chemistry courses.

The description does not involve the chemical shift δ spin-spin coupling effects for 1,4-dioxane   and the relative size of the carbon-13 NMR shifts does not give the ratio of the carbon atoms in the different non-equivalent chemical environments of the 1,4-dioxane   molecule.

The most common solvent used for investigating the 13C NMR spectrum of compounds like 1,4-dioxane  , is CDCl3 and other deuterated solvents.

13C nmr spectrum of 1,4-dioxane C4H8O2 analysis of chemical shifts ppm interpretation of C-13 chemical shifts ppm of para-dioxane 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 - 1,4-dioxane here.

Interpreting the C-13 NMR spectrum of 1,4-dioxane

As you can see from the diagram above there is only one 13C chemical shift line in the C-13 NMR spectrum of 1,4-dioxane indicating 1 chemical environment of all 4 carbon atoms of 1,4-dioxane.

13C chemical shift (a) on the C-13 NMR spectrum diagram for 1,4-dioxane.

There is only one 13C NMR chemical shift resonance because of the high symmetry of the 1,4-dioxane molecule and all four carbon atoms are in identical chemical environments.

The carbon-13 NMR spectra provides direct evidence of 1 carbon atom environments for the 4 carbon atoms in the 1,4-dioxane molecule, deduced from the presence of only 1 13C NMR chemical shifts (ppm).

Key words & phrases: C4H8O2 Interpreting the C-13 NMR spectra of 1,4-dioxane, C-13 nmr spectrum of 1,4-dioxane, understanding the carbon-13 nmr spectrum of 1,4-dioxane, explaining the line pattern in the high resolution C-13 nmr spectra of 1,4-dioxane, revising the C-13 nmr spectrum of 1,4-dioxane, ppm chemical shifts of the C-13 nmr spectrum of 1,4-dioxane, how to construct the diagram of the C-13 nmr spectrum of 1,4-dioxane, how to analyse the chemical shifts in the carbon-13 NMR spectrum of 1,4-dioxane deducing the chemical environment of all the carbon atoms in 1,4-dioxane examining the c13 nmr spectrum of  1,4-dioxane analysing the 13-c nmr spectrum of 1,4-dioxane how do you sketch and interpret the C-13 NMR spectrum of 1,4-dioxane interpreting interpretation of the C-13 NMR spectrum of 1,4-dioxane assignment of chemical shifts in the 13C NMR spectrum of 1,4-dioxane type ether functional group para-dioxane p-dioxane How do you interpret the chemical shifts of the C-13 NMR spectrum of 1,4-dioxane   How to interpret the C-13 NMR spectrum of 1,4-dioxane   Explanatory diagram of the 13C C-13 carbon-13 NMR spectrum of the  number of different carbon atom environments in the 1,4-dioxane   molecule from its carbon-13 NMR spectrum to help work out the molecular structure of the 1,4-dioxane   molecule? The uses and distinctive features of the carbon-13 NMR spectrum of the 1,4-dioxane   molecule explained. What do the number and values of the chemical shifts from the c-13 carbon-13 NMR spectrum tell us about the 1,4-dioxane   molecule? explaining the decoupled carbon-13 NMR spectrum of 1,4-dioxane    with a detailed interpretation diagram of all the C-13 chemical shifts and intensities

Links associated with 1,4-dioxane

The infrared spectrum of 1,2-dioxane (a cyclic peroxide), not available?

The infrared spectrum of 1,3-dioxane (a cyclic ether)

The infrared spectrum of 1,4-dioxane (a cyclic ether)

The mass spectrum of 1,2-dioxane (a cyclic peroxide), not available?

The mass spectrum of 1,3-dioxane (a cyclic ether)

The mass spectrum of 1,4-dioxane (a cyclic ether)

The H-1 spectrum of 1,2-dioxane (a cyclic peroxide)

The H-1 spectrum of 1,3-dioxane (a cyclic ether)

The H-1 spectrum of 1,4-dioxane (a cyclic ether)

The C-13 spectrum of 1,2-dioxane (a cyclic peroxide)

The C-13 spectrum of 1,3-dioxane (a cyclic ether)

The C-13 spectrum of 1,4-dioxane (a cyclic ether)

C-13 NMR spectroscopy index

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