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![[Figure 2]](oc3016fig2mag.jpg)
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Figure 2
Individual crystal packing of molecules A, B and C in compound 1. (a) View slightly off-set from the a axis, showing the near linear (θ = 167.8°) alignment of tail-to-tail C13C—H13C⋯O6C intrastrand contacts and interdigitation interactions through interstrand donor propargylic H9A (green) and H9B (blue) atoms with acceptor dioxolanyl atoms O6C (red) and ether atoms O3C (red), respectively; measurement of very weak engagement between interstrand donor proparygyl H9C (red) and acceptor propargylic ether atoms O2A (green) is not shown here, but discussed in Section 3.2.3 ![[link]](../../../../../../logos/arrows/c_arr.gif){kind=small} . (b) View along the c axis showing the parallel, unidirectional and tail-to-tail arrangements of strands of outstretched molecules A (green) and B (blue), and the orthogonal tail-to-tail arrangement of strands of molecules C (red), all with acetylenic donor C13—H13⋯O6 dioxolanyl acceptor contacts; the positions of atoms C5 and H9 are also shown for reference purposes. Generic atom labels without symmetry codes have been used. |
![[Figure 2]](oc3016fig2.jpg)
 | STRUCTURAL CHEMISTRY |
ISSN: 2053-2296
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