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Figure 2 A packing diagram, illustrating the four heterochiral catemers created by acid-to-ketone H bonds proceeding along chains of molecules glide-related in the 010 direction. The handedness of the molecules is differentiated by the shading of the bonds. Starting at the origin, the order of the directional alignment of the four chains with respect to the c axis is + + - -. Displacement ellipsoids are drawn at the 40% probability level for non-H atoms. |