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

Advanced Organic Chemistry: Carbon-13 NMR spectrum of propylamine CH₃CH₂CH₂NH₂

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Interpreting and explaining the Carbon-13 NMR spectrum of propylamine (1-aminopropane, propan-1-amine, 1-propylamine)

[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 spectroscopy analysis of propylamine (propanamine) [spectra updated Mar 28th 2026 *]

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C-13 NMR spectroscopy - spectra index

Introductory note on the 13C NMR spectrum of propylamine

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

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

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

C-13 nmr spectrum of propylamine analysis of chemical shifts ppm interpretation of C-13 chemical shifts ppm of propylamine 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 - propylamine here.

propylamine, (1-aminopropane), C₃H₉N, , ,

The classification, structure and naming of organic nitrogen compounds

Interpreting the C-13 NMR spectrum of propylamine

As you can see from the diagram above there are only three ¹³C chemical shift lines in the C-13 NMR spectrum of propylamine indicating 3 different chemical environments of the carbon atoms.

CH₃CH₂CH₂NH₂

(Note the 3 colours indicating the 3 different chemical environment of the carbon atoms in propylamine).

Note the decreasing effect on the chemical shift as the carbon atom is further from the highly electronegative nitrogen atom of propylamine, from (a) and (c).

The C-13 NMR spectra a provides evidence of 3 different carbon atom environments in the propylamine molecule from 3 different chemical shifts (ppm).

Key words & phrases: Interpreting the C-13 NMR spectra of propylamine, C-13 nmr spectrum of propylamine, understanding the carbon-13 nmr spectrum of propylamine, explaining the line pattern in the high resolution C-13 nmr spectra of propylamine, revising the C-13 nmr spectrum of propylamine, ppm chemical shifts of the C-13 nmr spectrum of propylamine, how to construct the diagram of the C-13 nmr spectrum of propylamine, how to analyse the chemical shifts in the carbon-13 NMR spectrum of propylamine deducing the chemical environment of all the carbon atoms in propylamine other names 1-aminopropane n-propylamine 1-propanamine 1-propylamine How do you interpret the chemical shifts of the C-13 NMR spectrum of propylamine How to interpret the C-13 NMR spectrum of propylamine Explanatory diagram of the 13C C-13 carbon-13 NMR spectrum of the number of different carbon atom environments in the propylamine molecule from its carbon-13 NMR spectrum to help work out the molecular structure of the propylamine molecule? The uses and distinctive features of the carbon-13 NMR spectrum of the propylamine molecule explained. What do the number and values of the chemical shifts from the c-13 carbon-13 NMR spectrum tell us about the propylamine molecule? explaining the decoupled carbon-13 NMR spectrum of propylamine with a detailed interpretation diagram of all the C-13 chemical shifts and intensities

Links associated with propylamine

The infrared spectrum of propylamine (propan-1-amine, 1-aminopropane)

The mass spectrum of propylamine (propan-1-amine, 1-aminopropane)

The H-1 NMR spectrum of propylamine (propan-1-amine, 1-aminopropane)

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Website content © Dr Phil Brown 2000+. All copyrights reserved on revision notes, images, quizzes, worksheets etc. Copying of Doc Brown's pre-university advanced level chemistry website material is NOT permitted. Exam revision summaries & references to science course specifications are unofficial. These organic chemistry revision notes on spectroscopy (on the 13C NMR spectrum of propylamine, propanamine, propan-1-amine, 1-propylamine, 1-propanamine) are suitable for use of pre-university students studying AQA advanced level chemistry, Edexcel advanced level chemistry, OCR advanced level chemistry, IB advanced level chemistry, WJEC (Eduqas) advanced level chemistry, CIE advanced level chemistry, CCEA advanced level chemistry, US grade 11-12 AP honors chemistry courses and they will also prove useful to 1st year undergraduate students of chemistry.