(2H14)Methylcyclohexane 3D Molecular Model — CAS 10120-28-2

(2H14)Methylcyclohexane (C7H14, CAS 10120-28-2) — a free educational 3D molecular model for teachers and students, by MolGod.org. Element symbols are cut into each atom sphere: a self-labelled teaching aid.

On a typical printed molecule every sphere is the same anonymous ball, since the STL file cannot transmit the usual colour convention. The MolGod approach puts the information where students look for it, on the atom: every sphere is engraved with its symbol. The project aims to let a student work out the arrangement of atoms, the bonds and the geometry of the molecule independently, without a colour key and without waiting for the teacher. Instead of building a model from scratch, a teacher can go straight from the molecule's name to a file in the slicer. Teachers and researchers can find the project rationale and validation plan at https://molgod.org/engraved-molecular-models/.

Start with the ring system: (2H14)Methylcyclohexane has one 6-membered ring; in total the model carries 21 bonds (all of them single). How many atoms can the class find? The engraved spheres give 7 C + 14 H, so the answer should be 21. A good fit for lessons on cycloalkanes (saturated carbon rings) and tetrahedral (sp3) carbon. Students can compare it with Methylcyclohexane (CAS 108-87-2): identical molecular formula, different arrangement of atoms. Computed hydrogen-bonding count: none in either direction, so it pairs well with an alcohol in a lesson on forces between molecules.

MolGod.org publishes its molecular models free of charge for teachers and students. Teachers: use the model for an exit-ticket question on the structure the class has just studied.

Print it, hand it round and build a lesson around it. If you share a photo, a lesson or an adapted version, the licence (CC BY-SA 4.0) asks for credit to "MolGod.org" as the model's author, a link to the original and to the licence text, a note of what you changed, and the same licence for adaptations; the attribution line below is ready to copy. No sign-up, no fees and no review required. Your comments decide what we improve next, from engraving depth to which molecules we add. Leave a review below or contact us at https://molgod.org/contact/. We enjoy hearing from classrooms: start a conversation in the comments or get in touch with us directly, we are glad to help. Just send us a CAS number: we will build a custom engraved 3D model of that molecule for you.

Full record and more free models: https://molgod.org/molecule/10120-28-2/?utm_source=printables&utm_medium=referral&utm_campaign=edu-3d-models
Licence & provenance: https://molgod.org/licenses/stl/10120-28-2/
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:(2H14)Methylcyclohexane-3D-molecular-model-engraved-CAS-10120-28-2.stl
Also published on: Zenodo (DOI, latest version) https://doi.org/10.5281/zenodo.23586676

A ball-and-stick model of (2H14)Methylcyclohexane 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: 218,704 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Chemical identity

• CAS Registry Number: 10120-28-2

• Molecular formula: C7H14

• Molar mass: 112.27 g/mol (exact mass 112.197424890)

• IUPAC name: 1,1,2,2,3,3,4,4,5,5,6-undecadeuterio-6-(trideuteriomethyl)cyclohexane

• MolGod ID: MG_314-606-368-15 (https://molgod.org/id/MG_314-606-368-15)

• PubChem CID: 524602 (https://pubchem.ncbi.nlm.nih.gov/compound/524602)

• Wikidata: Q82874613 (https://www.wikidata.org/wiki/Q82874613)

• InChIKey: UAEPNZWRGJTJPN-OBYKGMMLSA-N

• SMILES: [2H]C1(C(C(C(C(C1([2H])[2H])([2H])[2H])([2H])C([2H])([2H])[2H])([2H])[2H])([2H])[2H])[2H]

Required attribution (CC BY-SA 4.0): "(2H14)Methylcyclohexane 3D model by MolGod.org — https://molgod.org/molecule/10120-28-2/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/