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(a) Anti-diagonal spectra of mixtures TM1–TM7 with the 2-methyl alkane composition x2methyl = 5.6–100 mol %. Each spectrum was normalized to the intensity at Δδ = 0 ppm. (b) Ratios of cross-peak intensities RX against x2methyl. The RX values have a standard error of ±0.001.
