As alluded to in Sect. 2, it is evidenced in the CSD that it is not just the number of
crystal structures that is increasing but the size, complexity and diversity of structures are also growing. One way to demonstrate this is by looking at the average
number of atoms per structure which shows an increase in the size of the compounds
determined; see Fig. 3. With the increase in the average number of atoms in a
Fig. 3 Trends in the average number of atoms per structure and average unit cell volume (Å
3
)
Fig. 2 Number of entries in the CSD and entries added to the CSD (dark-blue column and lightblue column). Overlaid the percentage of the CSD that is organic (yellow dashed line) or metalorganic (red dashed line)
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crystal structures that is increasing but the size, complexity and diversity of structures are also growing. One way to demonstrate this is by looking at the average
number of atoms per structure which shows an increase in the size of the compounds
determined; see Fig. 3. With the increase in the average number of atoms in a
Fig. 3 Trends in the average number of atoms per structure and average unit cell volume (Å
3
)
Fig. 2 Number of entries in the CSD and entries added to the CSD (dark-blue column and lightblue column). Overlaid the percentage of the CSD that is organic (yellow dashed line) or metalorganic (red dashed line)
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S. J. Coles et al.