The Cambridge Crystallographic Data Centre (CCDC)  Access Structures

A new free pre-release version of Access structures with additional search functionality is now available to trial.

Structures from the Cambridge Structural Database (CSD) can be found using this free service by searching for:

  • CCDC Identifier(s) – the CSD refcode or CCDC number associated with the crystal structure(s)
  • Chemical names or synonyms of molecules or compounds in the structure
  • Bibliographic details of the publication in which the structure appears
  • Digital Object Identifier (DOI) of the dataset or the DOI of any associated scientific articles

If you enter details in more than one field, the search will try to find records containing all the terms entered.

More information is available alongside each search box by hovering over the blue information icon on the right hand side of the search box. For more detailed information on how the searches work, please see our FAQs.

Datasets are deposited with the CCDC through journal deposition arrangements with publishers, contributed directly by individuals or identified by our editorial team. They are held on trust on behalf of journals and individuals until we are informed that they can be made public. On publication, datasets are made freely available to everyone.

Published structures are also added to the Cambridge Structural Database (CSD) where the data is enhanced by the addition of bibliographic and chemical text, chemical structural data and the results of crystal structure validation. Our free services provide access to both the deposited datasets and validated structures from the CSD on an individual basis for personal use.

The CSD System facilitates comprehensive and systematic search, analysis and visualisation of data in the CSD and access to this is probably available within your institution. Financial contributions received through subscriptions to the CSD System allow the CCDC to provide deposition, dissemination and preservation services free of charge to the wider community. Software applications such as Mercury for structure visualisation and enCIFer for CIF format checking are also available free of charge along with database subsets that support teaching activities.