Figure 2
A packing diagram for (I), with two extracellular molecules to illustrate the two kinds of single-strand helical catemer proceeding in the b direction. Those of type (I) follow an axis in the ab face, and those of type (I′) an axis in the bc face. Methylene and methine H atoms have been omitted for clarity. Displacement ellipsoids are drawn at the 20% probability level. |