3,3'-Dichloro-4,4'-Diaminodiphenylmethane

3,3'-Dichloro-4,4'-Diaminodiphenylmethane (C13H12Cl2N2, CAS 101-14-4) — a free educational 3D molecular model for teachers and students, by MolGod.org. Whatever the filament colour, each atom reads clearly thanks to its engraved symbol. At its heart, 3,3'-Dichloro-4,4'-Diaminodiphenylmethane is built around two 6-membered rings, both aromatic. The model shows 30 bonds: 18 single and 12 aromatic, drawn in Kekulé form. How many atoms can the class find? The engraved spheres give 13 C + 12 H + 2 Cl + 2 N, so the answer should be 29. On the printed model, students can point to the two primary amino groups (-NH2) and the two C-Cl bonds. Full record and more free models: https://molgod.org/molecule/101-14-4/?utm_source=sketchfab&utm_medium=referral&utm_campaign=edu-3d-models Licence & provenance: https://molgod.org/licenses/stl/101-14-4/ Required attribution (CC BY-SA 4.0): "3,3'-Dichloro-4,4'-Diaminodiphenylmethane 3D model by MolGod.org — https://molgod.org/molecule/101-14-4/ — CC BY-SA 4.0"