Crystal structures of a solvated and unsolvated sulfone cyclic oligomer

The structure of the DMSO (dimethyl sulfoxide) solvate of the macrocyclic [ 2+2] dimer, 17,17,37,37-tetramethyl-2,12,22,32-tetraoxa-7,27-dithianonacycl o[36.2.2.2(3,6).2(8,11).2(13,16).2(18,21).2(23,26).2(28,31).2(33,36)]hexape ntaconta-3,5,8,10,13,15,18,20,23,25,28,30,33,35,38,40,41,43,45,47,49,51,53, 55-tetracosaene 7,7,27,27-tetraoxide, formed from 4,4'-dichlorodiphenyl sul fone and bisphenol-A has been determined by single-crystal techniques and t he structure of the unsolvated dimer refined using X-ray powder diffraction data. The molecular conformations are similar and phenyl-phenyl stacking i nteractions are apparently important in determining the molecular conformat ion in the solid state. C54H44O8S2. C2H6OS (1), cyclo-[(p-C6H4)SO2(p-C6H4)O (p-C6H4)C(CH3)(2)(p-C6H4)O](2). C2H6OS: molecular weight 963.2, monoclinic, P2(1)/c, a = 9.702 (2), b = 18.623 (3), c = 13.676 (2) Angstrom, beta = 91 .18 (1)degrees, V = 2470.5 (7) Angstrom(3), Z = 2. C54H44O8S2 (2), cyclo-[( p-C6H4)SO2(p-C6H4)O(p-C6H4)C(CH3)(2)(p-C6H4)O](2). C2H6OS: molecular weight 885.06, monoclinic, P2(1)/c, a = 9.5703 (15), b = 18.7582 (18), c = 13.394 5 (12) Angstrom, beta = 92.684 (11)degrees, V = 2402.0 (5) Angstrom(3), Z = 2.