Determination of absolute configuration using single crystal X-ray diffraction.

Single crystal X-ray crystallography is the most powerful structural method for the determination of the 3D structures of molecules. While the results of a routine diffraction experiment readily provide unambiguous determination of the relative configuration of all stereogenic centers in the molecule, determination of absolute configuration is more challenging. This chapter provides some helpful tips towards increasing the chances of success in the determination of the absolute configuration of a chiral, enantiomerically pure natural product using X-ray crystallography.