In the title compound, (C12H24N)[Sn(CH3)3(C6H6O3P)2], the SnMe3 residues are axially coordinated by two monodentate [PhPO3H]− anions, leading to a trigonal–bipyramidal geometry for the SnIV atom. The two [SnMe3(PhPO3H)2]− anions in the unit cell are associated into infinite chains along the a axis by O—H⋯O hydrogen bonds involving the hy­droxy group of the hydrogen phenyl­phospho­nate ion. The chains inter­act with one another via O—H⋯O hydrogen bonds along the c axis. These networks of anions assemble with the dicyclo­hexyl­ammonium ion through N—H⋯O hydrogen bonds, forming a three-dimensional network.

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 R 2 2(8) ring motifs. These dimers are bridged by two dicyclo­hexyl­aminium cations via pairs of N—H⋯O hydrogen bonds, giving R 4 4(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).

Four new phenylphosphonato SnR 3 (R = Ph, Me) derivatives have been synthesized and characterized by infrared and M ö ssbauer spectroscopy. The structure of catena-poly[PhPO 3 HSnMe 3 ] n has been determined by single-crystal X-ray diffraction analysis. The Sn IV atoms are five-coordinated in all compounds, with the SnC 3 O 2 framework in a trans trigonal bipyramidal arrangement and the PhPO 3 H -anions being in axial positions. The molecular structure of [PhPO 3 HSnMe 3 ] n is arranged as a one-dimensional coordination polymer in which planar SnMe 3 groups are axially bridged by -O-P-O-linkages of the PhPO 3 H -ligand. Neighboring chains are linked via O-H … O hydrogen bond interactions, generating a layered structure.In the R 2 NH 2 (PhPO 3 H) 2 SnR′ 3 (R = Cy, Bu; R′ = Ph, Me), the SnPh 3 or SnMe 3 residue is axially coordinated by two monodentate PhPO 3 H -. The role of the dialkylammonium cation, R 2 NH 2 + , is crucial in the lattice building via a hydrogen bond network. These hydrogen bonds contribute to the crystal stability and compactness and result in a three-dimensional arrangement. The aqua complex PhPO 3 (SnPh 3 ) 2 . 2H 2 O has a discrete structure and the anion PhPO 3 2-behaves as a bidentate ligand.

Crystals of the title salt, C21H20OP+·NO3 −, are composed of acetonyltriphenyl­phospho­nium cations and nitrate anions that mainly inter­act through electrostatic forces. The P atom in the cation has a slightly distorted tetra­hedral environment, with C—P—C angles ranging from 104.79 (7) to 112.59 (6)°. The sum of O—N—O angles of the nitrate anion is 359.99°, reflecting its trigonal–planar character. C—H⋯O hydrogen bonds help to consolidate the crystal packing.

The title compound Bu 2 NH 2 (PhPO 3 H) 2 SnMe 3 was synthesized and its structure determined by single crystal X-ray crystallography. The structure consists of two monodentate hydrogenophosphonates [PhPO 3 H] -bonded to SnMe 3 groups leading to SnC 3 O 2 moiety in a trans trigonal bipyramidal environment. [(PhPO 3 H) 2 SnMe 3 ] -dimerizes through hydrogen bonds. Dibutylammonium (Bu 2 NH 2 + ) cations are hydrogen bonded to the dimeric moieties through phosphonates to give a chain structure.