MOF Structure Viewer Frameworks and metal complexes in 3D

Search for a metal-organic framework or a metal complex by name, formula or COD number and open its experimental crystal structure in 3D: ZIF-8, ZIF-67, UiO-66, HKUST-1, MOF-5 and thousands of other frameworks, cages and coordination compounds in the Crystallography Open Database. The viewer fills the unit cell by symmetry, so the pores and channels show.

Free. Use your own Anthropic or OpenAI key.

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Search the Crystallography Open Database

Type a name, a mineral, a formula (SiO2 or C10 H10 Fe) or a seven-digit COD number. Searching and viewing are free and need no account or API key.

Examples from the database

Click a structure to open it in the viewer above. Each one is an entry in the Crystallography Open Database.

Watch how it works

How it works

  1. 1. Describe it or add a photoType what you want in plain words, with sizes if you know them, or add a photo as a reference. Describe an object or a person.
  2. 2. The AI builds and checks itThe AI writes an OpenSCAD program for an object, or sets up the character generator for a person. It looks at six rendered views of the result and fixes what is wrong, up to five builds per message.
  3. 3. Refine and exportThe model opens in the viewer at real size. Ask for changes in the chat, move the sliders, then download it or pick a format from the Export menu.

Why make it with AI here

  • Frameworks load with every metal node and linker in the cell, so you can see the pores, the secondary building units and how the linkers join them.
  • Metal complexes and organometallics, which are hard to build from a SMILES string, load from their crystal structures with the metal in place.
  • Export to GLB, USDZ or STL for teaching, posters, AR or a 3D-printed framework model.

Prompts to try

Click one to open it in the AI panel, then change the sizes to suit.

Using framework models

  1. Export GLB for slides, websites and 3D apps, or USDZ for AR on an iPhone or iPad.
  2. Export STL or 3MF to print a framework model; large cells print best scaled up.
  3. Download the CIF to continue in Mercury, VESTA or a simulation package.

Many frameworks were refined with solvent removed or disordered, so guest molecules may be missing or partly occupied. What you see is the structure as it was deposited.

Best export formats: GLB, USDZ, STL, PNG

Open MOF Structures files in the free MOF Structures viewer

Good to know

Only frameworks with a CIF in COD can be loaded, and many MOFs are deposited only with the Cambridge Structural Database. Cells with tens of thousands of atoms take longer to open.

Cost and privacy

You use your own Anthropic or OpenAI API key. It is stored only in your browser and sent only to that provider, which bills you directly: a model typically costs $0.05 to $0.30 at Standard quality and up to about $1 at Detailed, and Innerscene charges nothing. Your key and prompts are not sent to Innerscene; we record anonymous usage statistics such as the steps used, the model chosen, token counts, a cost estimate and whether a model was made.

How to get an Anthropic or OpenAI API key

Read the full guide: API keys, refining and exporting

Questions

▶Which MOFs are available?
Every framework deposited in the Crystallography Open Database, including ZIF-8, ZIF-67, UiO-66, HKUST-1 and the IRMOF series. Search by name, formula or COD number. A framework that is missing may be deposited only with the Cambridge Structural Database.
▶Are the pores shown empty?
They are shown as deposited. Some structures include solvent or guest molecules, and others were refined with the pores empty.
▶Can it show metal complexes?
Yes. Coordination compounds and organometallics such as ferrocene load from their crystal structures.
▶Do I need an API key?
Not to search or view. The search box and the examples on this page are free. A key is only needed when you ask the AI for a structure in plain words.

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