Structure of the cis-cisoid-cis isomer of 2,3,11,12 – tetra – anisyl – 18-crown-6: rel-(2R,3S,11R,12S) – 2,3,11,12 – tetrakis – 4 – methoxypheny l- 1,4,7,10,13,16 – hexaoxa – cyclooctadecane
Structure of the cis-cisoid-cis isomer of 2,3,11,12 – tetra – anisyl – 18-crown-6: rel-(2R,3S,11R,12S) – 2,3,11,12 – tetrakis – 4 – methoxypheny l- 1,4,7,10,13,16 – hexaoxa – cyclooctadecane, (B. L. Allwood, J. Crosby, D. A. Pears, H. Shahriari-Zavareh, A. M. Z. Slawin, J. F. Stoddart, and D. J. Williams), Acta Crystallogr. C. 1988, 44, 1097-1100.