Crystal Structure Viewer
Open a CIF and see the whole unit cell in 3D, with coordination polyhedra, whole molecules and disorder.
Open a CIF, or pick one of the examples, and see the whole unit cell in 3D. Atoms on the faces, edges and corners of the cell are drawn on every side, coordination octahedra are completed across the cell boundary, organic cations stay whole, and disordered sites are drawn with their occupancies. Choose which element pairs are bonded and which get polyhedra, repeat the cell along a, b and c, and look down any axis.
Symmetry comes from the file’s own operators, with all 530 settings of the 230 space groups as a fallback when a file has none. Move an atom and its symmetry copies follow, then export the edited structure as a CIF or save the view as an image. The symmetry expansion is tested against gemmi and spglib on 29 reference structures.
Works best on a desktop browser. Nothing you open leaves your machine: the CIF is read in the browser.