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There are two independent molecules in the asymmetric unit of the title compound, C12H12BrNO2. The C—C bond lengths of the two carbonyl C atoms of the five-membered rings are distinctly longer than a normal Csp2—Csp2 single bond. One of the molecules makes parallel self-coupled (inversion) dimers by π–π interactions with phenyl–phenyl interplanar distances of 3.403 (2) Å. The other molecule also forms self-dimers at longer phenyl–phenyl plane distances [3.649 (2) Å]. In the crystal, a C—H...O interaction is seen.

In the two title complexes, (C24H20P)[Au(C3S5)2]·C3H6O, (I), and (C20H20P)[Au(C3S5)2], (II), the AuIII atoms exhibit square-planar coordinations involving four S atoms from two 2-thioxo-1,3-dithiole-4,5-dithiolate (dmit) ligands. The Au—S bond lengths, ranging from 2.3057 (8) to 2.3233 (7) Å in (I) and from 2.3119 (8) to 2.3291 (10) Å in (II), are slightly smaller than the sum of the single-bond covalent radii. In (I), there are two halves of independent Ph4P+ cations, in which the two P atoms lie on twofold rotation axis sites. The Ph4P+ cations and [Au(C3S5)2]− anions are interspersed as columns in the packing. Layers composed of Ph4P+ and [Au(C3S5)2]− are separated by layers of acetone molecules. In (II), the [Au(C3S5)2]− anions and EtPh3P+ counter-cations form a layered arrangement, and the [Au(C3S5)2]− anions form discrete pairs with a long intermolecular Au...S interaction for each Au atom in the crystal structure. [ABSTRACT FROM AUTHOR]

In the title complex, (C21H22P)[Au(C3S5)2] or (Ph3C3H7P)[Au(dmit)2] (where Ph3C3H7P is the triphenyl- n-propylphosphonium cation and dmit is the 2-thioxo-1,3-dithiole-4,5-dithiolate anion), the AuIII atom exhibits a square-planar coordination involving four S atoms from two dmit ligands. The [Au(dmit)2]− anions form discrete pairs with a long intermolecular Au...S interaction for each Au atom in the crystal structure. [ABSTRACT FROM AUTHOR]

In the title complex, [Cd(SCN)2(C4H8O2S)2] n, the CdII atom, on an inversion centre, is within a distorted N2S2O2 octahedron and the five-membered ring has a distorted envelope conformation. In the crystal structure, neighbouring Cd atoms are connected by –SCN– bridges, leading to the formation of an infinite three-dimensional –Cd–NCS–Cd– network. [ABSTRACT FROM AUTHOR]

The crystal structure of the title compound, Na+·C3H2N3O3−·H2O, contains double chains of edge-shared distorted NaO6 octahedra propagating in the [100] direction. The double chains are linked by the isocyanurate anions. [ABSTRACT FROM AUTHOR]

In the title compound, C27H30S, the dihedral angle between the fluorene and benzene ring systems is 37.6 (5)°. [ABSTRACT FROM AUTHOR]

Ions of the title compound, C6H15N2O2+·C2F3O2−, a new organic nonlinear optical crystal, are linked by N—H...O hydrogen-bonding interactions. Both the amino groups of the l-lysinium cation are protonated. A three-dimensional network of hydrogen bonds is observed, forming a closed ring. Intermolecular N—H...O hydrogen bonds involving l-lysinium cations and trifluoroacetate anions link the ions into extended chains which run parallel to the [010] direction. The F atoms of the trifluoroacetate anion are disordered over two sites with site occupancies of 0.423 (18) and 0.577 (18). The asymmetric unit consists of two cations and two anions.

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]

The molecules of the title compound, C11H13N3O3, are linked by O—H⋯N and N—H⋯O interactions into a linear hydrogen-bonded chain. [ABSTRACT FROM AUTHOR]