Structure solution with three-dimensional sets of precessed electron diffraction intensities.
The use of the precession technique for obtaining three-dimensional (3D) sets of electron diffraction intensities suitable for structure solution is discussed. The minerals uvarovite and åkermanite have been used as testing structures. The electron diffraction data sets obtained on these samples retain an acceptable linear relation with calculated structure factor amplitudes. The quality of these data is suitable to solve both structures using direct methods opening the possibility to use 3D precession ED data for solving unknown mineral structures.
Gemmi
Mauro
M
Dipartimento di Scienze della Terra A. Desio, Università degli Studi di Milano, Milano, Italy. mauro.gemmi@unimi.it <mauro.gemmi@unimi.it>
Nicolopoulos
Stavros
S