Experimental Crystal data

R factor = 0.036; wR factor = 0.098; data-to-parameter ratio = 16.5. In the title salt, [(C6H11)2NH2] +[C6H5PO2(OH)], the anion is monodeprotonated and acts as both a hydrogen-bond donor and acceptor. The anions are linked by pairs of O—H O interactions, forming inversion dimers with R2 2(8) ring motifs. These dimers are bridged by two dicyclohexylaminium cations via pairs of N—H O hydrogen bonds, giving R44(12) ring motifs, forming chains propagating along [010]. The chains are bridged by C—H O interactions, forming a two-dimensional network lying parallel to (101). Related literature For the crystal structure of phenylphosphonic acid, see: Weakley (1976). For the crystal structure of aniliniu