The Cambridge Crystallographic Data Centre (CCDC). The CCDC websites use cookies. By continuing to browse the site you are agreeing to our use of cookies. For more details about cookies and how to manage them, see our cookie policy.
Scheduled Downtime - Saturday 24th January 2026 08.00-17.00 GMT. During this period of planned downtime, Access Structures, Deposit Structures and any related services are likely to be unavailable. We apologise for any inconvenience caused.
If you have not registered for a CCDC account before you can register using the button below. To find out more about CCDC accounts and what you are able to do once you have logged in, please see our support page.