Acta Cryst. (2013). E69, o1001-o1002 [ doi:10.1107/S1600536813014438 ]
Abstract: The reaction of tetrakis(allyloxy)calixarene with the first-generation Grubbs catalyst, followed by catalytic hydrogenation, gave the novel bis-calixarene 15,20,46,51,64,69,74,79-octaoxatridecacyclo[22.214.171.124,28.113,53.122,44.09,14.021,26.038,70.040,45.052,57.059,63.07,80.032,73]octaconta-1(63),3,5,7(80),9(14),10,12,21,23,25,28(73),29,31,34,36,38(70),40,42,44,52,54,56,59,61-tetracosaene benzene monosolvate, C72H72O8·C6H6. The structure consists of two calixarene units connected by four-carbon chains at each of the four O atoms on their narrow rims, to form a cage. Each of the calixarene units has a flattened cone conformation in which two of the opposite aryl groups are closer together and nearly parallel [dihedral angle between planes = 7.35 (16)°], and the other two aryl groups are splayed outward [dihedral angle between planes = 72.20 (8)°]. While the cavity contains no solvent or other guest molecule, there is benzene solvent molecule in the lattice. Two of the alkyl linking arms were disordered over two conformations with occupancies of 0.582 (3)/0.418 (3) and 0.33 (4)/0.467 (4). They were constrained to have similar metrical and thermal parameters.
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