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Figure 1 The simple monofunctional carboxylic acids have only two possible motifs: the catemer motif shown in (a) and (b), which are the two limiting submotifs (variations that fall between these motifs are possible), and the dimer motif shown in (c). The number above the motifs is the approximate axis length in the chain direction of (a)-(b).

© International Union of Crystallography 2003