Abstract
The separation of compounds by inorganic/organic boundary is of less importance for the structure determination by diffraction methods. More important for the diffraction is how the atoms build up larger building units and the crystal itself. A molecular/non-molecular boundary is therefore relevant for the choice of a structure determination method. Non-molecular compounds – also called extended solids – are constructed by bonds that extend “infinitely” in three dimensions through a crystal. These non-molecular crystals usually crystallize with higher symmetries, and atoms often occupy special Wyckoff positions. A review of actual methodology is given first, and then highlights and pitfalls of structure determination from powder diffraction, its problems and their solutions are shown and discussed using selected examples.
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Acknowledgments
The author wants to thank to all users of Fox, and especially to them who have kindly provided the details of their work when solving the crystal structures.
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Černý, R. (2012). Inorganic Materials. In: Kolb, U., Shankland, K., Meshi, L., Avilov, A., David, W. (eds) Uniting Electron Crystallography and Powder Diffraction. NATO Science for Peace and Security Series B: Physics and Biophysics. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5580-2_4
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DOI: https://doi.org/10.1007/978-94-007-5580-2_4
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