Diffractometer model: Bruker D8 QUEST
X-ray source: Cu microfocus
Temperature capability: 100–400 K
Our single-crystal X-ray diffractometer is capable of solving precise 3-dimensional atomic structures of organic, organometallic, and inorganic compounds from a single crystal. The Cu X-ray source is optimized for organic compounds of which single-crystal diffraction may be challenging with Mo radiation, with the extra capability of absolute structure determination available. Organometallic and inorganic compounds also scatter very well on the diffractometer. The theoretical resolution limit we can achieve is 0.77 Å. For average samples, a resolution of 0.83 Å is regularly reached. The microfocus X-ray source and PHOTON III detector enable collections of high-quality data from crystals as small as tens of micrometers (an order of magnitude reduction in the required sample dimensions).
Non-ambient temperature and variable-temperature experiments are also available with an equipped Cryostream 1000 temperature controller capable of reaching temperatures from 100 to 400 K. Best data quality is obtained at 100 K due to minimized atom vibrations.
General sample requirements:
· Crystals of organic compounds (containing no element heavier than F) should have a size of ≥50 µm in at least one dimension
· Crystals of organometallic and inorganic compounds should have a size of ≥10 µm in at least one dimension
· The better quality and bigger the crystals, the less time required for the measurement. Provide big, good crystals to lower usage charge.
· The use of chlorinated or sulfur-containing solvents is discouraged
· Samples need to be submitted in their mother liquors, unless a special circumstance is required (discuss with the crystallographer).
Read more about crystallization techniques
Sample submission:
Submit your sample information at the following online form and follow the instructions given.
Instrument usage rate:
The instrument is currently available free of charge for members of Faculty of Science, Mahidol University.
Crystallographers:
Email: musc.scxrd@gmail.com