---
title: "Nicotine Structure (C10H14N2): 3D Model, Formula & Molar Mass | MolDraw"
url: https://www.moldraw.com/molecules/nicotine.html
description: "Structure of Nicotine (C10H14N2, 162.24 g/mol): rotatable 3D model, 2D skeletal formula, IUPAC name, SMILES, shape, polarity, uses and FAQ."
lang: en
publisher: Scidart Academy
generated: 2026-10-26
---
[MolDraw](https://www.moldraw.com/) › [3D molecule models](https://www.moldraw.com/molecules/) › Nicotine structure

# Nicotine structure and 3D model (C10H14N2)

Nicotine is an alkaloid made of a flat pyridine ring joined to a puckered N-methylpyrrolidine ring. Tobacco makes the (S) enantiomer.

**Quick answer:** Nicotine is **C10H14N2**, molar mass **162.24 g/mol**. One flat and one puckered ring with two basic nitrogens; polar and miscible with water at room temperature.

Atom labels Hydrogens Spin

Drag to rotate · pinch or scroll to zoom. 3D coordinates: computed with RDKit (ETKDG conformer, force-field optimised).

## Nicotine at a glance

| Formula | C10H14N2 |
| --- | --- |
| Molar mass | 162.24 g/mol |
| IUPAC name | 3-[(2S)-1-methylpyrrolidin-2-yl]pyridine |
| Atoms / bonds | 26 / 27 |
| H-bond donors / acceptors | 0 / 2 |
| logP (estimated) | 1.8 |
| SMILES | `CN1CCC[C@H]1C2=CN=CC=C2` |
| InChIKey | `SNICXCGAKADSCV-JTQLQIEISA-N` |
| PubChem | [89594](https://pubchem.ncbi.nlm.nih.gov/compound/89594) |

![2D structural formula of Nicotine (C10H14N2)](https://www.moldraw.com/molecules/img/nicotine.svg)

2D structure (skeletal formula) · [Draw it in MolDraw](https://www.moldraw.com/)

## What the 3D model of Nicotine shows

The model contains **26 atoms** (12 heavy atoms and 14 hydrogens) joined by **27 bonds**; in ball-and-stick mode every stick is one bond, and double or aromatic bonds are drawn as multiple sticks. Switch to *space-filling* to see the molecule as its electron cloud, scaled to van der Waals radii: this is the shape other molecules actually "feel". It can donate 0 and accept 2 hydrogen bonds, and its estimated logP of 1.8 means it is fairly balanced between water and fat. Its topological polar surface area is 16 Ų.

## Shape and bond angles

| Atom(s) | Geometry / hybridisation | Angles & lengths |
| --- | --- | --- |
| pyridine ring atoms | Trigonal planar, sp²; aromatic ring | 120° |
| pyrrolidine carbons | Tetrahedral, sp³; puckered 5-ring | ≈ 104–109° |
| pyrrolidine N | Trigonal pyramidal, sp³ | ≈ 109° |

### Is Nicotine polar?

Yes. Both nitrogens accept hydrogen bonds, so nicotine mixes with water in all proportions below about 60 °C. It also dissolves in oils, which helps it cross membranes.

## Elemental composition of C10H14N2

| Element | Atoms | Mass (g/mol) | Mass % |
| --- | --- | --- | --- |
| Carbon (C) | 10 | 120.110 | 74.03% |
| Hydrogen (H) | 14 | 14.112 | 8.70% |
| Nitrogen (N) | 2 | 28.014 | 17.27% |

Calculated from IUPAC standard atomic weights. Check any formula with the [molar mass calculator](https://www.moldraw.com/tools/free-chem-tools/molar-mass-calculator.html).

## Uses of nicotine

- Stimulant found in tobacco and e-cigarettes
- Nicotine replacement products such as patches and gum
- Historically used as an insecticide

## Interesting facts

- Nicotine is named after Jean Nicot, who brought tobacco to the French court in 1560.
- It acts on nicotinic acetylcholine receptors in the brain and muscles.
- Pure nicotine is a colourless oily liquid that turns brown in air.

**Drawing structures for your notes?** MolDraw is a free online chemical structure editor for molecules, reactions and lab diagrams.

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## Frequently asked questions

### What is the structure of Nicotine?

Nicotine is an alkaloid made of a flat pyridine ring joined to a puckered N-methylpyrrolidine ring. Tobacco makes the (S) enantiomer. Its SMILES is CN1CCC[C@H]1C2=CN=CC=C2.

### Is nicotine a base?

Yes. It has two basic nitrogen atoms, and the pyrrolidine nitrogen is the more basic one (pKa of its conjugate acid about 8).

### Is nicotine chiral?

Yes. It has one stereocentre where the two rings join. Natural nicotine from tobacco is the (S) form.

### What is the chemical formula and molar mass of Nicotine?

Nicotine is C10H14N2 with a molar mass of 162.24 g/mol. It contains 26 atoms: 10 carbon, 14 hydrogen, 2 nitrogen.

### What is the IUPAC name of Nicotine?

The IUPAC name is 3-[(2S)-1-methylpyrrolidin-2-yl]pyridine.

### How do I draw Nicotine?

Open the MolDraw editor, paste the SMILES CN1CCC[C@H]1C2=CN=CC=C2 or type "Nicotine" in name search, and the structure is drawn for you. You can then export it as PNG, SVG, MOL or CDXML.

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