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Stacked-plot, mid-field expanded region of the 1H NMR spectrum (400 MHz, 298 K) of A(AuCl)2, B(AuCl)2, and C(AuCl)2 in CDCl3. At the bottom are schematic representations of calix[6]arene macrocycles. The rectangle identifies the phenolic ring substituted with the octyloxy chains, while the circle identifies those with methoxy groups.
