Chloroform 3D Molecular Model — CAS 67-66-3

Chloroform (CHCl3, CAS 67-66-3) — a free educational 3D molecular model for teachers and students, by MolGod.org. Each atom is labelled with its own engraved element symbol: no colour chart needed.

Chloroform has no rings at all: its 5 atoms form an open chain held together by 4 bonds (all of them single). Give each pair of students the model and a blank sheet: recording every engraved symbol should lead them to 1 C + 1 H + 3 Cl, which is 5 atoms. On the printed model, students can point to the three C-Cl bonds. Lesson link: organohalogen compounds and carbon-halogen bonds. Ask the class why this molecule cannot hydrogen-bond to itself: the computed count of donors and acceptors is zero.

This model is part of the free MolGod.org collection of engraved molecules for education. Teachers: pair it with the MolGod.org record to connect the 3D shape with identifiers and data.

Full record and more free models: https://molgod.org/molecule/67-66-3/?utm_source=printables&utm_medium=referral&utm_campaign=edu-3d-models

Licence & provenance: https://molgod.org/licenses/stl/67-66-3/

Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Chloroform-3D-molecular-model-engraved-CAS-67-66-3.stl

A ball-and-stick model of Chloroform 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: 77,668 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Names in other languages: chloroforme (fr); cloroformio (it); 氯仿 (zh).

Chemical identity

• CAS Registry Number: 67-66-3
• Molecular formula: CHCl3
• Molar mass: 119.37 g/mol (exact mass 117.914383)
• IUPAC name: chloroform
• MolGod ID: MG_345-434-976-05 (https://molgod.org/id/MG_345-434-976-05)
• PubChem CID: 6212 (https://pubchem.ncbi.nlm.nih.gov/compound/6212)
• Wikidata: Q172275 (https://www.wikidata.org/wiki/Q172275)
• EC number: 200-663-8
• ChemSpider ID: 5977
• InChIKey: HEDRZPFGACZZDS-UHFFFAOYSA-N
• SMILES: C(Cl)(Cl)Cl

Required attribution (CC BY-SA 4.0): "Chloroform 3D model by MolGod.org — https://molgod.org/molecule/67-66-3/ — CC BY-SA 4.0"

Licence text: https://creativecommons.org/licenses/by-sa/4.0/