DIRECT METHODS OF SOLVING PHASE AMBIGUITIES IN MACRO- MOLECULAR STRUCTURES

h the reciprocal-lattice vector, which corresponds to the diffraction index hkl Fh the structure factor at the reciprocal-lattice node defined by h Fh the magnitude of Fh ϕh the phase of Fh Eh the normalised structure factor corresponding to Fh Eh the magnitude of Eh F o h the structure-factor contribution from the non-anomalous scatterers F’h,A the structure-factor contribution from the real-part scattering of the anomalous scatterers, i.e. F h ' ( ' ) exp (), A A