Abstract

The molecule of the title salt, C26H22OP+.C4H3O4−, consists of a benzoyl­methyl­tri­phenyl­phospho­nium cation (HBPPY) and a hydrogen maleate anion. Owing to a strong O—H⋯O intraionic hydrogen bond, each hydrogen maleate ion forms a ring, described by the graph-set notation S11(7). Several C—H⋯O interactions are present between the cations and anions and contribute to the stabilization of the crystal structure.

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