Potassium p‐nitro­phenyl sulfate

The crystal structure of the title compound, K⁺·C₆H₄NO₆S⁻, is built up from p‐nitro­phenyl sulfate anions and potassium cations. Adjacent anions form dimers, which are linked together in a three‐dimensional network via short C—H⋯O contacts. The coordination sphere of the K⁺ ions may be described as a distorted square antiprism. The crystal structure is further stabilized by π–π stacking interactions between the aryl rings.