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May 2023 issue
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Cover illustration: The number of structurally characterized 1:1 salts of the feedstock chemical 4-picolylamine is limited. In the monohydrate of the perchlorate salt of 4-picolylamine, pyridin-4-ylmethanaminium perchlorate monohydrate, the two crystallographically distinct 4-picolylammonium cations exhibit different conformations. The supramolecular structure in the solid state features an intricate tri-periodic network of N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds. See: Seidel & Kolev [IUCrData (2023). 8, x230459].
metal-organic compounds
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organic compounds
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