title: From 1D strands to extended molecular assemblies in the binary compounds of dithiooxamide and dithiobiurea with crown ethers.
abstract: 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.
authors.affiliation: Institute of Applied Physics Academy of Sciences of Moldova, Chisinau, Moldova.
authors.forename: Yurii A
authors.initials: YA
authors.lastname: Simonov
authors.forename: Marina S
authors.initials: MS
authors.lastname: Fonari
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Zaworotko
authors.forename: Heba
authors.initials: H
authors.lastname: Abourahma
authors.forename: Janusz
authors.initials: J
authors.lastname: Lipkowski
authors.forename: Edward V
authors.initials: EV
authors.lastname: Ganin
authors.forename: Arkadii A
authors.initials: AA
authors.lastname: Yavolovskii
mesh_terms: D043844:Crown Ethers / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D007536:Isomerism; D015394:Molecular Structure; D013854:Thioamides / Q000737:chemistry*; D013890:Thiourea / Q000031:analogs & derivatives / Q000737:chemistry*
chemical_list: D043844:Crown Ethers; D013854:Thioamides; D013890:Thiourea; C005728:rubeanic acid