Sg. Bott et al., STRUCTURE OF THE PRODUCT FORMED VIA CU(I)-PROMOTED OXIDATIVE DIMERIZATION OF YCLO[5.4.0.0(2,6).0(3,10).0(5,9)]UNDECAN-ENDO-8-OL, Journal of chemical crystallography, 25(9), 1995, pp. 543-547
The structure consists of two acetyl-substituted PCU cages linked by a
diyne fragment. The conformation about the linker is midway between s
taggered and eclipsed, and the acetyl groups are somewhat distorted du
e to the proximity to the bulky cage units.