N,N′,N′′-Tricyclo­hexyl­guanidinium iodide

In the title compound, C19H36N3 +·I−, the orientation of the cyclo­hexyl rings around the planar (sum of N—C—N angles = 360°) CN3 + unit produces steric hindrance around the N—H groups. As a consequence of this particular orientation of the tricyclo­hexyl­guanidinium cation (hereafter denoted CHGH+), hydrogen bonding is restricted to classical N—H⋯I and non-clasical (cyclo­hex­yl)C—H⋯I hydrogen bonds. The propeller CHGH+ cation and the oriented hydrogen-bonding interactions lead to a three-dimensional supra­molecular structure

N-Benzoyl-N′,N′′-diphenyl­guanidinium chloride

In the title compound, C20H18N3O+·Cl−, the orientation of the aromatic rings around the planar CN3 + unit produces steric hindrance. As a consequence of this particular orientation of the guanidinium cation, hydrogen bonding is restricted to N—H⋯Cl and intra­molecular N—H⋯O hydrogen bonds within the discrete unit. The guanidinium and carbonyl groups are coplanar as a result of the six-membered ring formed by the N—H⋯O intra­molecular hydrogen bond. The dihedral angles between the guanidinium plane and the two phenyl rings are 62.31 (8) and 64.24 (8)°

Potassium 2-iodo­benzene­sulfonate monohydrate

In the crystal structure of the title compound, K+·C6H4IO3S−·H2O, the potasium cation is 2.693 (3)–2.933 (3) Å from the sulfonate and water O atoms (including symmetry-related atoms) and forms a two-dimensional sheet-like structure in the bc plane, with the iodo­benzene rings protruding above and below. The water mol­ecule of crystallization is hydrogen-bonded to sulfonate O atoms within this two-dimensional arrangement. Symmetry-related iodo­benzene rings are arranged perpendicular to one another with the I atom ca 4.1 Å from the centroid of the neighbouring benzene ring. In the crystal structure, these two-dimensional sheet-like supramolecular structures are arranged parallel to one another, stacked along the a-axis direction, with the benzene rings inter­digitated