Chlorophacinone 3D Model — CAS 3691-35-8

Chlorophacinone (C23H15ClO3, CAS 3691-35-8) — 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. Turn the model in your hand to see the shape of Chlorophacinone: four rings (one 5-membered and three 6-membered), with one pair of rings fused along a shared edge, three of them aromatic, and 45 bonds in total (24 single, 3 double and 18 aromatic). Counting task: 23 C + 15 H + 1 Cl + 3 O gives 42 engraved spheres; can the class rebuild the formula C23H15ClO3 from the model alone? Before any theory, let students hunt on the model for the three ketone groups (C=O) and the C-Cl bond. There is one stereocentre in Chlorophacinone; the configuration is not specified in this record, so students can work out what the R and S forms would look like. It makes aromaticity and delocalised electrons, chirality, enantiomers and CIP (R/S) rules, fused ring systems, the carbonyl group (C=O), as well as organohalogen compounds and carbon-halogen bonds easier to see. Free for education: MolGod.org publishes engraved molecular models for teachers, students and schools. Teachers: hand out printed copies and ask students to rebuild the structural formula from the model. Full record and more free models: https://molgod.org/molecule/3691-35-8/?utm_source=thingiverse&utm_medium=referral&utm_campaign=edu-3d-models Licence & provenance: https://molgod.org/licenses/stl/3691-35-8/ Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Chlorophacinone-3D-molecular-model-engraved-CAS-3691-35-8.stl A ball-and-stick model of Chlorophacinone 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: 594,382 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer. Names in other languages: Chlorphacinon (de); Chloorfacinon (nl); 氯鼠酮 (zh). Chemical identity - CAS Registry Number: 3691-35-8 - Molecular formula: C23H15ClO3 - Molar mass: 374.8 g/mol (exact mass 374.0709720) - IUPAC name: 2-[2-(4-chlorophenyl)-2-phenylacetyl]indene-1,3-dione - MolGod ID: MG_940-128-408-66 (https://molgod.org/id/MG_940-128-408-66) - PubChem CID: 19402 (https://pubchem.ncbi.nlm.nih.gov/compound/19402) - Wikidata: Q413488 (https://www.wikidata.org/wiki/Q413488) - EC number: 223-003-0 - ChemSpider ID: 18286 - InChIKey: UDHXJZHVNHGCEC-UHFFFAOYSA-N - SMILES: C1=CC=C(C=C1)C(C2=CC=C(C=C2)Cl)C(=O)C3C(=O)C4=CC=CC=C4C3=O

Required attribution (CC BY-SA 4.0): "Chlorophacinone 3D model by MolGod.org — https://molgod.org/molecule/3691-35-8/ — CC BY-SA 4.0" Licence text: https://creativecommons.org/licenses/by-sa/4.0/