Potassium Phthalimide

Potassium phthalimide, K⁺.C₈H₄NO₂^-, a widely used reagent for the preparation of anthranilic acid via Hofmann degradation or of primary alkylamines via the Gabriel synthesis, crystallizes in polar layers of potassium cations coordinated by five O and three N centres alternating with apolar layers of stacked benzene subunits.

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