Fig. 4

ORTEP drawing of the X-ray crystal structure of disyndiotactic oligomers. a Hexamer of methyl cinnamate. b Pentamer of methyl cinnamate. c Tetramer of methyl cinnamate. All hydrogen atoms are omitted for clarity. Carbon atoms are shown in white and oxygen atoms are shown in red (thermal ellipsoids at the 50% probability level). The crystallographic data are summarized in Supplementary Table 1. Single crystals of methyl cinnamate oligomers suitable for X-ray crystallography were grown in a mixed solvent of CHCl₃/n-hexane