Crystal structure of (n-but­yl)[2-(2,6-di­meth­­oxy­phen­yl)-6-methyl­phen­yl](2-meth­­oxy­phen­yl)phospho­nium chloride monohydrate

The title hydrated salt, C26H32O3P+·Cl−·H2O, contains four different substit­uents (H, alkyl, aryl, and biar­yl) on the P atom. The P—H hydrogen atom of the phospho­nium ion was located in a difference Fourier map and refined without imposing additional restraints. In the crystal, the Cl− ions and water mol­ecules are linked by pairs of Owater—H⋯Cl− hydrogen bonds and further linked to the phospho­nium cation by P—H+⋯Cl− and CAr/OMe—H⋯Owater hydrogen bonds to form an infinite one-dimensional chain along the [010] direction.