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

Advanced Organic Chemistry: 13C NMR spectrum of ethoxyethane CH₃CH₂OCH₂CH₃

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Interpreting the Carbon-13 NMR spectrum of ethoxyethane (diethyl ether)

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C-13 NMR spectroscopy - spectra index

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Introductory note on the 13C NMR spectrum of ethoxyethane

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

The description does not involve the chemical shift δ spin-spin coupling effects for ethoxyethane 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 ethoxyethane molecule.

The most common solvent used for investigating the C13 NMR spectrum of compounds like ethoxyethane, is CDCl₃ and other deuterated solvents.

C-13 nmr spectrum of ethoxyethane analysis of chemical shifts ppm interpretation of C-13 chemical shifts ppm of ethoxyethane 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 - ethoxyethane

Ethoxyethane C₄H₁₀O , , aliphatic ether

The molecular structure and naming of aliphatic alcohols and ethers
Interpreting the C-13 NMR spectrum of ethoxyethane (diethyl ether)

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

CH₃CH₂OCH₂CH₃

(note the colours indicating the two different chemical environment of the carbon atoms).

The symmetry of the ethoxyethane molecule accounts for why only two chemical environments (a and b) are possible.

Note the carbon atom nearest (attached) to the very electronegative oxygen atoms has a much larger ¹³C chemical shift than the methyl carbon atoms.

Key words & phrases: Interpreting the C-13 NMR spectra of ethoxyethane, C-13 nmr spectrum of ethoxyethane, understanding the carbon-13 nmr spectrum of ethoxyethane, explaining the line pattern in the high resolution C-13 nmr spectra of ethoxyethane, revising the C-13 nmr spectrum of ethoxyethane, ppm chemical shifts of the C-13 nmr spectrum of ethoxyethane, how to construct the diagram of the C-13 nmr spectrum of ethoxyethane, how to analyse the chemical shifts in the carbon-13 NMR spectrum of ethoxyethane diethyl ether How do you interpret the chemical shifts of the C-13 NMR spectrum of ethoxyethane CH3CH2OCH2CH3 How to interpret the C-13 NMR spectrum of ethoxyethane CH3CH2OCH2CH3 Explanatory diagram of the 13C C-13 carbon-13 NMR spectrum of the number of different carbon atom environments in the ethoxyethane CH3CH2OCH2CH3 molecule from its carbon-13 NMR spectrum to help work out the molecular structure of the ethoxyethane CH3CH2OCH2CH3 molecule? The uses and distinctive features of the carbon-13 NMR spectrum of the ethoxyethane CH3CH2OCH2CH3 molecule explained. What do the number and values of the chemical shifts from the c-13 carbon-13 NMR spectrum tell us about the ethoxyethane CH3CH2OCH2CH3 molecule? explaining the decoupled carbon-13 NMR spectrum of ethoxyethane CH3CH2OCH2CH3 with a detailed interpretation diagram of all the C-13 chemical shifts and intensities

Associated links

Infrared spectrum of ethoxyethane (diethyl ether)

The mass spectrum of ethoxyethane (diethyl ether)

The H-1 NMR spectrum of Ethoxyethane (diethyl ether)

C-13 NMR spectroscopy index

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