01
277 molecules
Symmetry Lab
Turn each molecule in 3D and switch on its rotation axes, mirror planes and centre of inversion.
- 3D viewer
- Symmetry elements
- Challenge
4AB Chemistry Atlas
See beyond
Four connected 3D labs for the shape of matter: turn a molecule and find its symmetry, sort it into a point group, step inside a crystal's unit cell, then read the space group behind it.
- 277Molecules
- 32Point groups
- 80Crystal structures
- 230Space groups
Four labs · one atlas
Choose where to begin.
From a single molecule to the symmetry of a whole crystal. Search by topic or symbol, or let the atlas pick for you.
02
32 point groups
Point Groups
Every group from C1 to Ih, sorted into families, with its order and the molecules that belong to it.
- 12 families
- Group order
- Molecules in 3D
03
80 structures
Crystal Lab
Step inside unit cells — from simple cubic and NaCl to perovskite, spinel and MOFs — with packing and coordination shown.
- Unit cells
- 2,126 prototypes
- Density calculator
04
230 space groups
Space Groups
Each of the 230 groups with its Hermann–Mauguin symbol, symmetry operations, Wyckoff positions and an interactive diagram.
- Wyckoff positions
- Operations
- Cell diagrams
No lab matches that search. Try “symmetry”, “crystal”, “C3v” or “Wyckoff” — or .
A learning path
From shape to symmetry, in three steps.
Each lab builds on the one before. Start where you are comfortable.
- 1See itTurn a molecule in the Symmetry Lab and switch on each symmetry element.
- 2Name itPlace it in its point group and see which other molecules share it.
- 3Build itRepeat it in space: unit cells, then the space group behind them.