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Figure 1 The three component aggregate in the 2:1 co-crystal formed between 2-phenylacetic acid and 4-pyridinealdazine showing atom-labelling scheme and displacement ellipsoids at the 70% probability level. Unlabelled atoms are related by the symmetry operation 1 − x, 1 − y, −z. The view highlights the extended chair conformation and the O—H⋯N hydrogen bonds (shown as orange dashed lines). |