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Gossypol and cyclo­dodecanone crystallize at room temperature as an inclusion complex in a 1:2 molar ratio. This complex, viz. 1,1',6,6',7,7'-hexa­hydroxy-5,5'-diiso­pro­pyl-3,3'-di­methyl-2,2'-bi­naphthalene-8,8'-di­carbox­aldehyde-cyclo­do­deca­none (1/2), C30H30O8·2C12H22O, is unusual in that there is limited intermolecular hydrogen bonding within the structure. Each cyclo­dodecanone mol­ecule accepts a hydrogen bond from a gossypol mol­ecule, but there are no gossypol-to-gossypol hydrogen-bond interactions. The gossypol mol­ecules form a framework structure enclosing channels, and the cyclo­dodecanone mol­ecules lie in these channels. In terms of the number of non-H guest atoms, this is the largest gossypol inclusion complex reported to date.
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