1,1'-(1,2-Ethanediylbis(oxy))bis(ethene) 3D Molecular Model — CAS 764-78-3

1,1'-(1,2-Ethanediylbis(oxy))bis(ethene) (C6H10O2, CAS 764-78-3) — a free educational 3D molecular model for teachers and students, by MolGod.org. Instead of colour coding, every sphere carries its engraved element symbol.

On a typical printed molecule every sphere is the same anonymous ball, since the STL file cannot transmit the usual colour convention. MolGod adds what the STL format leaves out by engraving the element symbol into each atom of the printed structure. The project exists to put these files in teachers' hands, so that identifying atoms becomes quick and the lesson can move on to how atoms interact. For teachers it also saves preparation: the file is already modelled and labelled, so the only steps left are scaling and slicing. Background, references and the planned classroom study: How the engraved atom letters are designed.

There is not a single ring in 1,1'-(1,2-Ethanediylbis(oxy))bis(ethene); 18 atoms are linked by 17 bonds in an open chain (15 single and 2 double). Hand the model round and let students tally the engraved atoms: 6 C + 10 H + 2 O, 18 in total. Natural follow-up models: Triethylene glycol divinyl ether (CAS 765-12-8) and Diethylene glycol divinyl ether (CAS 764-99-8), close enough in structure for a spot-the-difference task. Where on the model can students see the two ether linkages (C-O-C) and the two carbon-carbon double bonds (C=C)? Let them search before you reveal the answer. Ask students what this molecule has in common with Allyl glycidyl ether (CAS 106-92-3) and Cyclopentanecarboxylic acid (CAS 3400-45-1), then what sets them apart; the molecular formula is shared.

MolGod.org builds and releases these models at no cost for chemistry teaching. Teachers: the engraved symbols let students work with the model without a separate key.

The model is yours to download, print and teach with. CC BY-SA 4.0 sets four simple conditions for anything you publish with it: credit "MolGod.org" as the model's author, link the original and the licence, say what you changed, and share derivatives alike. Copy the attribution line below to get it right. There is no registration, no payment and no obligation to rate it. Teachers and students, we read every comment. Tell us in a review how the model worked for you and what we could do better for education; for longer feedback write to 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. Teaching a compound we have not modelled yet? Get in touch and we will create a 3D model especially for your class.

Full record and more free models: 1,1'-(1,2-Ethanediylbis(oxy))bis(ethene), CAS 764-78-3: structure, properties and 3D viewer
Licence & provenance: Licence record for this 1,1'-(1,2-Ethanediylbis(oxy))bis(ethene) model
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:1,1'-(1,2-Ethanediylbis(oxy))bis(ethene)-3D-molecular-model-engraved-CAS-764-78-3.stl
Plain-text record for AI assistants: 1,1'-(1,2-Ethanediylbis(oxy))bis(ethene) data sheet in plain text for LLMs

A ball-and-stick model of 1,1'-(1,2-Ethanediylbis(oxy))bis(ethene) 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: 300,976 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.

Chemical identity

• CAS Registry Number: 764-78-3

• Molecular formula: C6H10O2

• Molar mass: 114.14 g/mol (exact mass 114.068079557)

• IUPAC name: 1,2-bis(ethenoxy)ethane

• MolGod ID: MG_438-837-615-62 (Permanent MolGod record MG_438-837-615-62)

• PubChem CID: 136586 (https://pubchem.ncbi.nlm.nih.gov/compound/136586)

• Wikidata: Q83106913 (https://www.wikidata.org/wiki/Q83106913)

• InChIKey: ZXHDVRATSGZISC-UHFFFAOYSA-N

• SMILES: C=COCCOC=C

Required attribution (CC BY-SA 4.0): "1,1'-(1,2-Ethanediylbis(oxy))bis(ethene) 3D model by MolGod.org — https://molgod.org/molecule/764-78-3/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/