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ORTEP drawing of calixarene 6, 50% probability thermal ellipsoids. For clarity, the molecule of methanol is not represented. Important bond lengths (Å) and angles (°): O7–C49 1.453(12), C49–C51 1.503(15), C49–C50 1.501(14), C50–O8 1.410(13), O7–C49–C51 111.7(9), O7–C49–C50 103.7(7), C51–C49–C50 113.2(10), and C49–C50–O8 112.3(8).
