The molecular structure of (E,E)-[2.4] paracyclophane-1,17-diene, a unique paracyclophane analogue, was established by an X-ray crystal structure analysis, and found to be of 2/m molecular symmetry with all benzene rings and vinylene groups perpendicular to molecular ring.
Y. Ito, S. Miyata, M. Nakatsuka, T. Saegusa, M. Takamoto and Y. Wada, J. Chem. Soc., Chem. Commun., 1982, 375 DOI: 10.1039/C39820000375
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