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Structure of the resorcinarene bis-crowns CNBC5 24, R = CnH2n+1 where n = 2, 3, 4, 5, 7, 9, 10, 11 with selected crystallographic numbering. cw and ccw enantiomers are shown; the A/C plane runs through the upright aryl rings (A and C) and the B/D plane through parallel aryl rings (B and D) respective to the methine plane C7–C14–C21–C28 [124].
