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organic compounds
The title compound, C34H16N4O4, is a perylene-imide pigment utilized for H2 gas sensors. The molecule has Ci symmetry with one half-molecule in the asymmetric unit. The angle between each of the pyridyl rings and the perylene-imide skeleton is 54.88 (10)°. The molecules are stacked in a `hunter's fence' fashion (viz. when viewed from the side, molecules, slipped by 45° within molecular stacks, cross each other in a fence-like structure) along the b axis.
organic compounds
The title compound, C34H16N4O4, is a perylene-imide pigment utilized for H2 gas sensors. There are two independent half- molecules in the asymmetric unit. The symmetry of both molecules is Ci. The angles between the each of the pyridyl rings and the perylene-imide skeleton are 77.7 (1) and 72.8 (1) in the two molecules. The independent molecules are stacked alternately along the b axis.
organic compounds
The title compound, C34H16N4O4, is a perylene-imide pigment utilized for H2 gas sensors. The molecule has Ci symmetry. The angle between each of the pyridyl rings and the perylene-imide skeleton is 74.5 (2)°. The molecules are stacked along the c axis with a tilt angle of about 31.5° between adjacent molecules.
organic compounds
The centrosymmetric title compound, C16H10N4O2, is an organic red pigment utilized for H2 gas sensors. The centrosymmetric diketopyrrolopyrrole moieties are connected by bifurcated N
HO hydrogen bonds to form a ribbon structure along [110] and [1
0] alternately. The molecules are stacked in a `hunter's fence' (viz. when viewed from the side, molecules, slipped by 45° within molecular stacks, cross each other in a fence-like structure) fashion along the a axis.
HO hydrogen bonds to form a ribbon structure along [110] and [1
0] alternately. The molecules are stacked in a `hunter's fence' (viz. when viewed from the side, molecules, slipped by 45° within molecular stacks, cross each other in a fence-like structure) fashion along the a axis.organic compounds
The title compound, C16H10N4O2, is an organic red pigment utilized for H2 gas sensors. The asymmetric unit contains two half-molecules, each molecule being centrosymmetric. The two independent centrosymmetric diketopyrrolopyrrole moieties are connected by N—HN hydrogen bonds to form a ribbon structure along [100]. The molecules are stacked in a `hunter's fence' fashion (viz. when viewed from the side, molecles, slipped by about 70° within moleclar stacks, cross each other in a fence-like structure) along the b axis.
N hydrogen bonds to form a ribbon structure along [100]. The molecules are stacked in a `hunter's fence' fashion (viz. when viewed from the side, molecles, slipped by about 70° within moleclar stacks, cross each other in a fence-like structure) along the b axis.organic compounds
In the title compound, C44H38N4·3C7H8, the porphine (CP) is a soluble precursor of metal-free porphyrin which exhibits an excellent field-effect transistor characteristic. The CP molecule is not entirely flat in its crystal structure (i.e. not D2h), but is slightly deformed, as characterized by crystallographic Ci symmetry. The geometric isomer of CP could not be identified due to orientational disorder.
organic compounds
The title compound, C38H24N4O4·2C6H6O, is a 1:2 complex of a pyridylethylperylene derivative (EPY) with phenol. The pyridylethyl& groups are attached to the perylene imide skeleton in a trans fashion. The EPY molecule is centrosymmetric. The EPY molecules are stacked along the a axis, with a slip angle of about 32°.
organic compounds
The title compound, C38H24N4O4·2C7H8O, is a 1:2 complex of a pyridylethylperylene derivative, EPY, with m-cresol. The EPY molecule has a centre of symmetry and the pyridylethyl groups are attached to the perylene-imide skeleton in a trans fashion. The EPY molecules are stacked along the a axis with a slip angle of about 47°.
organic compounds
In the title compound, C44H38N4·2CHCl3, the porphine (CP) is a soluble precursor of metal-free porphyrin which exhibits an excellent field-effect transistor characteristic. The CP skeleton is entirely flat and characterized by crystallographic Ci symmetry. In the present geometrical isomer, the C-C single-bond linkages of the four peripheries are arranged in an above-above-below-below manner with respect to the CP skeleton.
metal-organic compounds
The title compound, [Zn(C15H21O3)2(C3H6OS)2], is a powerful charge-control agent used widely for toners in electrophotography. This ZnII complex has no molecular symmetry and possesses a deformed tetrahedral coordination geometry. Two 3,5-di-tert-butyl-2-hydroxybenzoate ligands serve as monodentate ligands, while two dimethyl sulfoxide molecules are coordinated to the Zn atom.
organic compounds
The title compound, C23H20N2O4, is a soluble precursor (`latent pigment') of diketopyrrolopyrrole pigments. The tert-butoxycarbonyl group is twisted by 78.5 (1)° with respect to the heterocyclic ring system. In the crystal structure, pairs of molecules form centrosymmetric dimers through N—HO intermolecular hydrogen bonds and are stacked in a herring-bone fashion along the a axis.
O intermolecular hydrogen bonds and are stacked in a herring-bone fashion along the a axis. metal-organic compounds
The title compound, [Zn3(C15H21O3)6(C2H3N)2], has a center of symmetry and contains one six-coordinate Zn atom located at the center of the molecule and two four-coordinate Zn atoms at the periphery. Each 3,5-bis(1,1-dimethylethyl)-2-hydroxybenzoate anion serves as a bridging ligand between the central and peripheral Zn atoms. An acetonitrile molecule is coordinated to each peripheral Zn atom.
organic compounds
The title compound, C20H10Cl2N2O2, is an industrially important red pigment. The molecule has inversion symmetry. The molecule is not entirely planar, as shown by the dihedral angle of 176.7 (3)° between the planes of the benzene ring at the center and that at the extremity. The molecules are stacked in a `hunter's fence' fashion (i.e. when viewed from the side, the molecules cross one another with an angle of about 50° in a grid-like structure) along the a axis.
organic compounds
The title compound, C36H16N4O2, is the trans form of a benzimidazole perylene derivative used as a black pigment. The molecule is entirely planar and possesses a center of symmetry. The molecules are oriented in the same direction and are stacked with a considerable overlap of the perylene imide skeleton along the a axis.
organic compounds
The title compound, C36H16N4O2, is the cis form of a benzimidazole perylene derivative used as a black pigment. The molecule is planar and stacked along the a axis. Because of an orientational disorder, a crystallographic center of symmetry appears at the site of the molecule, although the molecule does not have a center of symmetry.
organic compounds
The title compound, C20H10Cl2N2S2·2C3H7NO, is a dimethylformamide (DMF) disolvate of DTQ-Cl, which is a thionated pigment derivative of 2,9-dichloroquinacridone. The DTQ-Cl molecule is centrosymmetric and entirely planar. Two DMF molecules are hydrogen-bonded to DTQ-Cl, through the NH group of DTQ-Cl and the O atom of DMF. The molecular plane of DMF is twisted with respect to the skeleton of DTQ-Cl by 21.4 (1)°.
organic compounds
The title compound, C20H10Cl2N2S2·2C4H9NO, is a dimethylacetamide (DMA) disolvate of DTQ-Cl, which is a thionated derivative of a 2,9-dichloroquinacridone pigment. The compound shows polymorphism and this paper reports the monoclinic form (space group P21/c, Z = 4). Two DMA molecules are hydrogen bonded via their O atoms to the NH group of DTQ-Cl. The molecular planes of the two DMA molecules are asymmetrically twisted with respect to the DTQ-Cl skeleton by 11.65 (8) and 31.58 (9)°.
organic compounds
The title compound, C20H10Cl2N2S2·2C4H9NO, is a dimethylacetamide (DMA) disolvate of DTQ-Cl, which is a thionated derivative of a 2,9-dichloroquinacridone pigment. The compound shows polymorphism and this paper reports the triclinic form (space group P
, Z = 1). The DTQ-Cl molecule is centrosymmetric and planar, while the DMA molecule is orientationally disordered. Two symmetry-related DMA molecules are hydrogen bonded via their O atoms to the NH groups of DTQ-Cl. The molecular plane of DMA is twisted with respect to the DTQ-Cl skeleton by 73.6 (1)°.
, Z = 1). The DTQ-Cl molecule is centrosymmetric and planar, while the DMA molecule is orientationally disordered. Two symmetry-related DMA molecules are hydrogen bonded via their O atoms to the NH groups of DTQ-Cl. The molecular plane of DMA is twisted with respect to the DTQ-Cl skeleton by 73.6 (1)°.metal-organic compounds
In the title compound, [Zn(C15H21O3)2(H2O)2]·3C4H9NO, there are two independent ZnII complexes each having mirror symmetry. To each Zn atom, two 3,5-di-tert-butyl-2-hydroxybenzoate ligands serve as monodentate ligands, and two water molecules are additionally coordinated to form a tetrahedral geometry.
metal-organic compounds
In the title compound, [Zn(C15H21O3)2(H2O)3]·3C4H9NO, the ZnII complex has mirror symmetry. Two 3,5-di-tert-butyl-2-hydroxybenzoate ligands serve as monodentate ligands, and three water molecules are additionally coordinated to the Zn atom, forming a trigonal–bipyramidal geometry.
organic compounds
n-Propyl gallate (PG) is a charge-control agent used for toners in electrophotography, and shows pseudo-polymorphism. In the asymmetric unit of the title compound, 3 C10H12O5·0.5CHCl3, there are three PG molecules and a half-molecule of chloroform, the solvent molecule being disordered over an inversion centre. There are intra- and intermolecular O—HO hydrogen bonds, forming a two-dimensional hydrogen-bond network in the (421) plane.
O hydrogen bonds, forming a two-dimensional hydrogen-bond network in the (421) plane.organic compounds
n-Propyl gallate (PG) is a charge-control agent used for toners in electrophotography, and shows pseudo-polymorphism. The title compound, 3C10H12O5·0.5CH2Cl2, is isostructural with the corresponding chloroform solvate. The asymmetric unit is composed of three PG molecules and a half-molecule of dichloromethane, the solvent being disordered over an inversion centre. There are intra- and intermolecular O—HO hydrogen bonds, forming a two-dimensional hydrogen-bond network in the (421) plane.
O hydrogen bonds, forming a two-dimensional hydrogen-bond network in the (421) plane.organic compounds
n-Propyl gallate (PG) is a charge-control agent used for toners in electrophotography, and shows pseudo-polymorphism. In the asymmetric unit of the title compound, 2C10H12O5·CH3CN, there are two PG molecules and one solvent molecule. There are intra- and intermolecular O—HO hydrogen bonds, forming a three-dimensional hydrogen-bond network.
O hydrogen bonds, forming a three-dimensional hydrogen-bond network.organic compounds
The title compound, C20H10Cl2N2O2, is one of the quinacridone derivatives known as a red pigment. The molecule has inversion symmetry. The quinacridone molecules are connected by bifurcated N—HO hydrogen bonds along [110] to form a two-dimensional hydrogen-bond network.
O hydrogen bonds along [110] to form a two-dimensional hydrogen-bond network.organic compounds
In the title compound, C24H12N4O4·2C3H7NO, the naphthalene imide, which is an organic pigment utilized for H2 gas sensors, has inversion symmetry. The pyridyl rings are twisted, in the same direction, out of the plane of the naphthalene imide skeleton by 69.5 (2)°.
