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The title complex, [ZnCl(C4H8N2S)3]Cl, comprises [ZnCl(ATU)3]+ cations (ATU is allyl­thio­urea) and Cl− anions, both of which lie on threefold axes. The three S atoms of the allyl­thio­urea mol­ecules and one Cl atom coordinate the Zn atom in a tetrahedral arrangement. The crystal packing is mainly determined by weak N—H⋯Cl hydrogen bonds. [ABSTRACT FROM AUTHOR]

The title complex, C6H15N4O2+·C4H3O4−·2H2O, contains a planar ring formed by sharing one H atom between the O atoms in the carboxyl groups of the maleate anion. This hydrogen bond is slightly asymmetric. In thel-argininium(+) cation, both the α-amino and the guanidyl groups are protonated. The nonlinear optical response of the compound is derived from the intrinsic hyperpolarizabilities of thel-argininium cations, maleate anions and intermolecular hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, {[K2Ni(C5O5)2(H2O)2]·4H2O} n, the Ni atom lies on an inversion centre. Two inversion-related croconate [4,5-dihydroxy-4-cyclo­pentene-1,2,3-trionate(2−)] ligands and an NiII ion form a near-planar symmetrical [Ni(C5O5)2]2− moiety. The near-square coordination centre of the moiety is then extended to an octa­hedral core by vertically bonding two water mol­ecules in the [Ni(C5O5)2(H2O)2]2− coordination anion. The crystal structure is characterized by a three-dimensional network, involving strong K⋯O⋯K binding, K⋯O—Ni binding and hydrogen bonding. [ABSTRACT FROM AUTHOR]

The title molecule, C26H46O4, has symmetry. The non-H atoms of the octyloxy and methoxymethyl chains are almost coplanar with the benzene ring. There are weak C—H...O hydrogen bonds and C—H...π-ring interactions in the structure. The molecules are loosely packed in the structure. The unit-cell volume is 20% larger than is expected from the empirical rule pertinent to organic compounds, which states that the unit-cell volume (Å3) is approximately equal to the number of non-H atoms in the unit cell multiplied by 18. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title phospho­nium salt, C22H22O2P+·Br−·H2O, the triphenyl­phospho­sphonium group has three P—C bonds to phenyl rings which are equal within experimental error [mean 1.782 (3) Å] The P atom is also attached directly to the C atom of a 1,3-dioxan-2-ylmethyl group with a longer P—C bond of 1.800 (3) Å. The C—C bond of the dioxane ring [1.418 (5) Å] is shorter than the normal bond distance. The asymmetric unit contains two bromide anions on twofold rotation axes to balance the charge of the cation. [ABSTRACT FROM AUTHOR]