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organic compounds
Hydrogen bonding between the peracid proton and phthalimido carbonyl O atom connect molecules into chains in the structures of 3-phthalimidoperoxypropanoic acid, C11H9NO5, and 4-phthalimidoperoxybutanoic acid, C12H11NO5. In contrast, the peracid function acts as both a hydrogen-bond donor and acceptor in the structures of 5-phthalimidoperoxypentanoic acid, C13H13NO5, and 6-phthalimidoperoxyhexanoic acid, C14H15NO5, resulting in a distinctly different chain motif.