4,4'-Diaminodiphenyl Ether — CAS 101-80-4

4,4'-Diaminodiphenyl Ether (C12H12N2O, CAS 101-80-4) — 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. Which rings can the class see in 4,4'-Diaminodiphenyl Ether? The answer is two 6-membered rings, both aromatic, joined up by 28 bonds altogether (16 single and 12 aromatic, drawn in Kekulé form). Give each pair of students the model and a blank sheet: recording every engraved symbol sho…

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