Toluene (C7H8, CAS 108-88-3) — a free educational 3D molecular model for teachers and students, by MolGod.org. Instead of colour coding, every sphere carries its engraved element symbol.
Look at the skeleton first: Toluene contains one aromatic 6-membered ring, and students can trace 15 bonds (9 single and 6 aromatic). Hand the model round and let students tally the engraved atoms: 7 C + 8 H, 15 in total. Zero hydrogen-bond donors or acceptors (computed) make it a clear contrast case for intermolecular forces. A good fit for lessons on aromaticity and delocalised electrons. Want a comparison? The most similar structures in the MolGod.org collection are o-xylene (CAS 95-47-6) and p-cresol (CAS 106-44-5).
MolGod.org shares these models for free to make chemistry tangible in the classroom. Teachers: print one per group and let students check the structure against the formula.
Full record and more free models: https://molgod.org/molecule/108-88-3/?utm_source=printables&utm_medium=referral&utm_campaign=edu-3d-models
Licence & provenance: https://molgod.org/licenses/stl/108-88-3/
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Toluene-3D-molecular-model-engraved-CAS-108-88-3.stl
A ball-and-stick model of Toluene 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: 189,682 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.
Names in other languages: Toluol (de); toluène (fr); tolueen (nl); toluen (pl); 甲苯 (zh).
Chemical identity: CAS Registry Number 108-88-3 | Molecular formula C7H8 | Molar mass 92.14 g/mol | IUPAC name: toluene | MolGod ID MG_139-568-630-43 (https://molgod.org/id/MG_139-568-630-43) | PubChem CID 1140 | Wikidata Q15779 | EC number 203-625-9 | ChemSpider ID 1108 | InChIKey YXFVVABEGXRONW-UHFFFAOYSA-N | SMILES Cc1ccccc1
Required attribution (CC BY-SA 4.0): "Toluene 3D model by MolGod.org — https://molgod.org/molecule/108-88-3/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/

