The X-ray Diffraction Laboratory has both single-crystal and powder diffraction instrumentation available for users and as a service. Single-crystal diffraction for the determination of solid-state structures of new molecules is performed on a state-of-the-art Nonius KappaCCD diffractometer equipped with an Oxford Cryostreams 700 series cold N2 gas stream (90K to room temperature) sample cooler. An Enraf-Nonius CAD-4 serial diffractometer with Cu radiation is available for determining absolute structures of crystalline organic samples. Powder diffraction is performed with a Bruker D-5000 q - q diffractometer equipped with a Kevex energy-sensitive detector. The D-5000 has an alternate sample stage for doing variable temperature (90K – 600K) studies. The lab has extensive computational and graphics capabilities using several Linux and NT based workstations on a local network with plotting available on an HP 8550N color laser printer. The Cambridge Structural Database (CSD) is also available online. Listed below are provided services:

• Single-crystal screening, data collection, structure solution and refinement (including disordered structures and twinned crystals), and report generation with tables, molecular plots, and CIF’s.
• User training to allow use of the instruments
• CSD database searches
• Manuscript preparation for submission to crystallographic journals.
• Powder diffraction scans performed.

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