2-Hy­droxy-N-(4-meth­oxy­benz­yl)-4-nitro­anilinium chloride

The crystal structure of the title compound, C14H15N2O4 +·Cl−, can be described as being composed of layers containing both cations and anions that are staggered along [010]. Two types of the hydrogen bonds are observed, viz. cation–anion and cation–cation. The chloride anions are acceptors of the strong hydrogen bonds donated by the secondary amine and the hy­droxy groups. The packing is also stabilized by weak C—H⋯O inter­molecular hydrogen bonds. An intra­molecular N—H⋯O inter­action also occurs

Tris(piperazine-1,4-diium) bis­[hexa­chloridoindate(III)] tetra­hydrate

The asymmetric unit of the title compound, (C4H12N2)3[InCl6]2·4H2O, consists of one and half independent piperazinium cations, an hexa­chloridoindate anion and two mol­ecules of water. The InIII ion is six-coordinated and forms a quasi-regular octa­hedral arrangement. In the crystal, alternating layers of cations and anions are arranged parallel to (10) and are linked with the water mol­ecules via intra- and inter­molecular N—H⋯O, O—H⋯Cl, C—H⋯O and N—H⋯Cl hydrogen bonds, forming a complex three-dimensional network. Additional stabilization within the layers is provided by weak inter­molecular C—H⋯Cl inter­actions

Bis(cytosinium) aqua­penta­chlorido­indate(III)

The asymmetric unit of the title compound, (C4H6N3O)2[InCl5(H2O)], comprises two independent cytosinium cations and an aquapentachloridoindate anion. The InIII ion is in a slightly distorted octa­hedral coordination geometry. In the crystal, alternating layers of cations and anions are arranged along [010] and are linked via inter­molecular N—H⋯O, O—H⋯Cl and N—H⋯Cl hydrogen bonds, forming sheets parallel to (001). Additional stabilization within these sheeets is provided by weak inter­molecular C—H⋯O inter­actions