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Figure 2
A breakdown of each type of organic crystal found in the 2015 version of the CSD (November 2015, Version 5.37 with one update). Entries are determined from a search for that particular crystal type. Families are calculated based on the number of distinct refcode families within a particular search. Solvates in this case refer to non-hydrated solvates. True crystals refer to compounds with only the minimal chemical units necessary to produce that crystal type (Grothe et al., 2016BB16). Polymorphic compounds are those on the list of polymorph families which have two structurally determined forms (see section S6 of the supporting information for more details).

IUCrJ
Volume 5| Part 2| March 2018| Pages 124-129
ISSN: 2052-2525
https://doi.org/10.1107/S2052252518000660