RESUMEN

The hydrogen-bonding networks for seven new binary compounds of dithiooxamide, (NH2CS)2 (dtox) and dithiobiurea (NH2CSNH)2 (dtur) with crown ethers, 18-crown-6 (18C6), 15-crown-5 (15C5), 12-crown-4 (12C4), cis-syn-cis-(DCHA), and cis-anti-cis-(DCHB) isomers of dicyclohexyl-18 -crown-6 are discussed. (15C5.dtox), (18C6.dtur) and (DCHB.dtur) afford one-dimensional hydrogen-bonded polymeric arrays where the components alternate. In (DCHA.2dtox) and (DCHB.2dtox) the similar hydrogen-bonded chains are further interlinked via dtox molecules to generate layered motifs. In (15C5.2dtur) the dtur molecules are self-assembled into layers via N-H...S hydrogen bonds. 15C5 spacers link adjacent layers into a three-dimensional network. In (12C4.dtur) the dtur molecules are arranged in chains. These chains alternate with the crown molecules attached to them through N-H...O hydrogen bonds in such a way that each 12C4 appears to be linked with four dtur molecules and vice versa thus providing a three-dimensional grid.

Asunto(s)

Éteres Corona/química , Tioamidas/química , Tiourea/química , Cristalografía por Rayos X , Enlace de Hidrógeno , Isomerismo , Estructura Molecular , Tiourea/análogos & derivados

RESUMEN

In the title compound, C(5)H(8)N(6)OS(2), the supramolecular architecture is sustained by two N--H...O and three N--H...S hydrogen bonds, and by N.S electrostatic interactions. The hydrogen-bond network generates a sheet structure, which extends in the a and b directions and is one c-cell dimension thick. These extended sheets are then linked across inversion centres in the c direction by N...S electrostatic interactions, thus forming a three-dimensional network. The principal intermolecular dimensions include N(H)...O distances of 2.8393 (17) and 3.0268 (16) A, N(H)...S distances in the range 3.2896 (14)-3.5924 (16) A and N...S distances of 3.0822 (16) A.

RESUMEN

In the title hydrated adduct, 1,4,10,13-tetraoxa-7,16-diazoniacyclooctadecane bis(4-aminobenzenesulfonate) dihydrate, C(12)H(28)N(2)O(4)(2+).2C(6)H(6)NO(3)S(-).2H(2)O, formed between 7,16-diaza-18-crown-6 and the dihydrate of 4-aminobenzenesulfonic acid, the macrocyclic cations lie across centres of inversion in the orthorhombic space group Pbca. The anions alone form zigzag chains, and the cations and anions together form sheets that are linked via water molecules and anions to form a three-dimensional grid.