> For the complete documentation index, see [llms.txt](https://docs.materialsproject.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.materialsproject.org/apps/explorer-apps/mof-explorer/property-definitions/symmetry.md).

# Symmetry

The symmetry of each MOF is determined using Pymatgen's [SpacegroupAnalyzer](https://pymatgen.org/pymatgen.symmetry.analyzer.html#pymatgen.symmetry.analyzer.SpacegroupAnalyzer) with a `symprec` tolerance of 0.1. The symmetry is based on the PBE-D3(BJ) optimized structure. It should be noted that all structure relaxations were carried out without explicit symmetry constraints of any kind.