5-Bromo-2-fluoropyridine 3D Molecular Model — CAS 766-11-0

5-Bromo-2-fluoropyridine (C5H3BrFN, CAS 766-11-0) — a free educational 3D molecular model for teachers and students, by MolGod.org. Instead of colour coding, every sphere carries its engraved element symbol.

Most printable molecule files rely on colour coding, yet the STL format carries no colour and a single-filament print loses it entirely. We build the label into the model: each sphere bears its recessed element symbol, readable by eye and by fingertip. The purpose is educational: teachers get printable files built to shorten the step of 'which atom is this?' and leave more time for chemistry. For teachers it also saves preparation: the file is already modelled and labelled, so the only steps left are scaling and slicing. More about the hypothesis we are testing with these models: How the engraved atom letters are designed.

Turn the model in your hand to see the shape of 5-Bromo-2-fluoropyridine: one aromatic 6-membered ring, and 11 bonds in total (5 single and 6 aromatic, drawn in Kekulé form). Quick starter: ask students to count the engraved symbols (5 C + 3 H + 1 Br + 1 F + 1 N) and check that they add up to 11 atoms and the formula C5H3BrFN. Worth bringing out when the syllabus reaches aromaticity and delocalised electrons, heteroaromatic rings (nitrogen inside an aromatic ring), as well as organohalogen compounds and carbon-halogen bonds. Its closest structural relatives in the MolGod.org collection are 5-Bromo-2-chloro-3-fluoropyridine (CAS 831203-13-5) and Methyl 5-bromopyridine-2-carboxylate (CAS 29682-15-3); printing them side by side makes a quick compare-and-contrast exercise. Team task: with the model in hand, each group marks the pyridine-type ring nitrogen, the C-F bond and the C-Br bond, then writes down what they found.

MolGod.org builds and releases these models at no cost for chemistry teaching. Teachers: use the model for an exit-ticket question on the structure the class has just studied.

Free to print and free to bring into any classroom. Sharing it somewhere? The licence (CC BY-SA 4.0) needs four things: "MolGod.org" credited as the creator, links to the original and to the licence, a mention of any changes, and adaptations released under the same licence. The attribution text below covers the first two. Nothing else is needed: no account, no cost, no compulsory feedback. Did it help your lesson? Write us a short review in the comments and tell us what would make the next molecule even better for students (or contact us at Write to the MolGod team). Let's talk chemistry! Ask anything about this structure in the comments, and other teachers are warmly invited to share their lesson ideas. Missing a compound for your lesson? Give us the CAS number and we are happy to create its 3D model.

Full record and more free models: 5-Bromo-2-fluoropyridine, CAS 766-11-0: structure, properties and 3D viewer
Licence & provenance: Licence record for this 5-Bromo-2-fluoropyridine model
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:5-Bromo-2-fluoropyridine-3D-molecular-model-engraved-CAS-766-11-0.stl
Plain-text record for AI assistants: 5-Bromo-2-fluoropyridine data sheet in plain text for LLMs

A ball-and-stick model of 5-Bromo-2-fluoropyridine with each element symbol recessed into its atom sphere, generated by MolGod.org from a PubChem-computed 3D conformer (not an experimental crystal structure); atomic coordinates and connectivity are unchanged. STL mesh: 197,704 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Chemical identity

• CAS Registry Number: 766-11-0

• Molecular formula: C5H3BrFN

• Molar mass: 175.99 g/mol (exact mass 174.94329)

• IUPAC name: 5-bromo-2-fluoropyridine

• MolGod ID: MG_392-171-169-76 (Permanent MolGod record MG_392-171-169-76)

• PubChem CID: 2783168 (https://pubchem.ncbi.nlm.nih.gov/compound/2783168)

• Wikidata: Q72479466 (https://www.wikidata.org/wiki/Q72479466)

• EC number: 629-380-1

• InChIKey: MYUQKYGWKHTRPG-UHFFFAOYSA-N

• SMILES: C1=CC(=NC=C1Br)F

Required attribution (CC BY-SA 4.0): "5-Bromo-2-fluoropyridine 3D model by MolGod.org — https://molgod.org/molecule/766-11-0/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/

License note: the CC BY-SA 4.0 license applies to the 3D model (STL) and its render. The framed presentation image (gold frame) is © MolGod.org, All rights reserved — see molgod.org/copyright.