Welcome to Olex2

Olex2 is an easy-to-use program for small-molecule structure solution and refinement. It also includes many useful tools for structure analysis, archiving and report generation. All aspects of the structure determination and publication process are presented in a single, workflow-driven package – with the ultimate goal of producing an application which will be useful to both chemists and crystallographers.

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If you are a practising small-molecule crystallo­grapher, or a chemist with a particular interest in crystal structures of your molecules, Olex2 is for you.

John Warren has very kindly provided us with a sub-forum on his excellent xForum. Please click here to browse the forum or post to it.

If you are using Olex2, please cite us in your publications, using this reference: J. Appl. Cryst. (2009). 42, 339–341. The original journal article here and you can download a reprint from our own site here.

For those scientists who want to be at the cutting edge of crystallographic research, a plugin containing the full functionality of the cctbx (including our new Charge Flipping structure solution program and smbtx-based refinement program) is available from within Olex2.

Olex2 is now available for Windows, Linux and Max OS X. Olex2 is free of charge. Please click on the tab of your operating system to download the program.

Olex2 was created by Oleg Dolomanov and Horst Puschmann of Durham University, UK. The smtbx development is driven by Luc Bourhis along with Richard Gildea, who also helps with maintaining the GUI. The Linux distributions are provided by John Warren.

Please use the bugs link above for bug reports, suggestions and feature requests.