Benzo[i]naphtho[c,d]bicyclo[5.4.1]dodecan-12-one.
In the title compound, pentacyclo[11.8.1.1(3,11).0(7,23).0(15, 20)]tricosa-3,5,7,9,11(23),15,17,19-octaen-22-one, C(23)H(20)O, the bicyclo[5.4.1]dodecan-12-one moiety takes a rigid conformation in which the seven- and eight-membered rings take chair and boat-boat forms, respectively. The molecule has a non-crystallographic mirror symmetry perpendicular to the benzene and naphthalene planes.
Isobe
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Graduate School of Engineering Sciences, 39, Kyushu University, Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan.
Kubo
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Thiemann
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Sawada
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Yonemitsu
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Mataka
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