Data Collection and Structure Determination.The Department X-Ray Diffraction facility offers varied crystallographic services including:.The sample preparation laboratory is equipped with Stereo/Polarizing microscopes with digital video capabilities for screening and mounting crystals fume hood, refrigerator and freezer for crystallization and sample storage, together with other necessary facilities for crystallization and crystal handling.
The Cambridge Structural Database (CSD) is available to all students, faculty and staff for their teaching and research projects. All computers in the lab are integrated with the university computer network. The X-ray Laboratory Computing Facility has several workstations running crystallographic software. This instrument is also capable of data collection for small angle x-ray scattering (SAXS) experiments.ĬOMPUTER FACILITIES AND OTHER INSTRUMENTATION It is also used to determine the homogeneity of crystalline samples from which single crystals have been used for crystal structure determination. This provides a valuable analytical tool for the identification of single and multi-component solids by comparison with known published powder patterns. Currently, this diffractometer is primarily used for teaching and user training.Ī Rigaku Ultima IV Powder Diffractometer is used primarily for bulk material characterization, including air- and moisture-sensitive samples. This instrument uses a sealed tube Mo x-ray source. Fast data collections can be carried out using this Kappa geometry diffractometer equipped with a 4K CCD (Charge Coupled Device) chip at 100-300K. The Bruker APEX II Kappa Dffractometer is equipped with an Oxford Cryostream low temperature device. Absolute configuration of the molecule can be determined using this system. Structure determination of all weakly diffracting samples and most research samples are carried out using this system. Shutter-less, very fast data collections can be carried out using this Kappa geometry diffractometer at 100-300K using the Oxford Cryostream-800 low temperature device. This instrument is equipped with two Incotec micro-focus X-ray sources (Cu and Mo) and a PHOTON-II CPAD (Charge-integrating Pixel Array Detector) detector. The Bruker Venture-Duo PHOTON-II Kappa Diffractometer is the state-of-the art single crystal instrument purchased with funding from NSF in 2019. Rajamoni Jagan by email: SINGLE CRYSTAL X-RAY DIFFRACTION INSTRUMENTATION The facility is located in custom-designed laboratory space in the Center for Nanoscience, opened in November 1996, and currently houses single crystal and powder diffractometers.įor more information please contact Dr. The Laboratory is equipped with state-of-the-art instrumentation and computational facilities for solid state three dimensional crystal and molecular structure determinations. Also, we collaborate with a number of groups elsewhere in the USA and in other countries in their solid-state structure determination research. The X-ray Diffraction Laboratory at UMSL supports the research programs of several research groups in the department. X-ray crystal structure determination is an important technique for most inorganic and organic chemists.
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