Triazabicyclodecene 3D Molecular Model — CAS 5807-14-7

Triazabicyclodecene (C7H13N3, CAS 5807-14-7) — 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.

Plain ball-and-stick prints look the same for every element: the STL format has no way to say which ball is carbon and which is oxygen. The MolGod approach puts the information where students look for it, on the atom: every sphere is engraved with its symbol. Our goal as an education project: free files for teachers, designed so that students recognise atoms at a glance and spend their attention on bonds and structure. No CAD skills are needed on the teacher's side; the structure, geometry and labels come ready in one file. More about the hypothesis we are testing with these models: How the engraved atom letters are designed.

Start with the ring system: Triazabicyclodecene has two 6-membered rings, fused along a shared edge; in total the model carries 24 bonds (23 single and 1 double). A five-minute warm-up: read the symbol on every sphere and write down the totals (7 C + 13 H + 3 N = 23 atoms). Bond geometry can be taught straight from this model: sp3 carbons make up a fraction of 0.86, and sp2 or sp carbons account for the rest. A good fit for lessons on fused ring systems. Students can look on the model for the 1 donor and 3 acceptors of hydrogen bonds; both figures are computed.

Teachers and students can use this MolGod.org model free of charge. Teachers: use the model for an exit-ticket question on the structure the class has just studied.

The model is yours to download, print and teach with. Publishing pictures, materials or remixes of it? Under CC BY-SA 4.0, name "MolGod.org" as the author, link back to the original and to the licence, mark your changes and keep remixes under the same terms. A ready-made attribution is included below. There is no registration, no payment and no obligation to rate it. Help us make better models for students! A comment with your honest review, what worked, what was hard to read, what you would change, is the best gift you can give us. More at Write to the MolGod team. Have an idea for a lesson built around this molecule? Share it in the comments so other teachers can use it too. 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: Triazabicyclodecene, CAS 5807-14-7: structure, properties and 3D viewer
Licence & provenance: Licence record for this Triazabicyclodecene model
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Triazabicyclodecene-3D-molecular-model-engraved-CAS-5807-14-7.stl
Plain-text record for AI assistants: Triazabicyclodecene data sheet in plain text for LLMs
Also published on: Zenodo (DOI, latest version) https://doi.org/10.5281/zenodo.23954218

A ball-and-stick model of Triazabicyclodecene 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: 252,418 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Names in other languages: 1,5,7-Triazabicyclo(4.4.0)dec-5-en (de); 1,5,7-triazabicyklo[4.4.0]dek-5-en (pl); 1,5,7-三氮杂双环［4.4.0］癸-5-烯 (zh).

Chemical identity

• CAS Registry Number: 5807-14-7

• Molecular formula: C7H13N3

• Molar mass: 139.20 g/mol (exact mass 139.110947427)

• IUPAC name: 3,4,6,7,8,9-hexahydro-2H-pyrimido[1,2-a]pyrimidine

• MolGod ID: MG_845-826-642-14 (Permanent MolGod record MG_845-826-642-14)

• PubChem CID: 79873 (https://pubchem.ncbi.nlm.nih.gov/compound/79873)

• Wikidata: Q7840264 (https://www.wikidata.org/wiki/Q7840264)

• EC number: 227-367-1

• ChemSpider ID: 72164

• InChIKey: FVKFHMNJTHKMRX-UHFFFAOYSA-N

• SMILES: C1CNC2=NCCCN2C1

Required attribution (CC BY-SA 4.0): "Triazabicyclodecene 3D model by MolGod.org — https://molgod.org/molecule/5807-14-7/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/