In the crystal structure of the title compound, C23H19N5O3·0.58C2H6OS·0.42C2H3N, prepared by the azo coupling of the 4-nitro-phenyl-diazo-nium salt with 3a-(p-tol-yl)-2,3,3a,4-tetra-hydro-1H-benzo[d]pyrrolo-[1,2-a]imidazol-1-one, the azo mol-ecules are linked by N-H⋯O hydrogen bonds into chains along the a-axis direction, and by the π-π inter-action into [101] chains. The dimethyl sulfoxide and...

The title compound, C(16)H(11)N(3)O(2), displays a trans configuration with respect to the azo group. The mol-ecule is non-planar; the maleimide ring forms a dihedral angle of 42.35 (4)° with the benzene ring bonded to its N atom and the mean plane of this benzene ring is rotated by 21.46 (8)° with respect to the azo group mean plane, which, in turn, forms a dihedral angle of 24.48 (7)° with th...

The mol-ecular structure of the title compound, C(12)H(8)I(2)N(2) [systematic name: (E)-bis-(2-iodo-phen-yl)diazene], exhibits an essentially planar trans geometry [maximum deviation = 0.022 (4) Å] with the iodine atoms ortho to the azo bridge. In the crystal, offset π-stacking leads to the formation of columns along the a axis [closest C⋯C distance = 3.383 (4) Å].

In the title compound, C(32)H(26)BN(5) or [(C(14)H(11)N(5))B(C(6)H(5))(3)], the B atom is approximately tetra-hedrally coordinated. The diazo unit is in a trans conformation, which is generally more stable than a cis one for aromatic azo compounds. The crystal structure features very weak C-H⋯π inter-actions. The dihedral angles between the central benzene ring and the terminal rings in the het...

The title compound, C20H21N3O, has crystallographic mirror symmetry with all non-H atoms apart from the methyl C atom of the CMe2 group lying on the mirror plane. Mol-ecules are linked into planar sheets parallel to (010) by phen-yl-azo C-H⋯N and phen-yl-ethanone C-H⋯O inter-actions. Methyl C-H⋯π inter-actions provide crosslinking between the planes.

The title compound, C(21)H(18)N(6)O(2), was obtained as a by-product of a reaction between (E)-4-(4-dimethyl-amino-phenyl-azo)benzoic acid and 2-amino-4-(2-pyrid-yl)-6-(6-pyrid-yl)-1,3,5-triazine, which has a very low solubility, under peptidic coupling conditions, using THF as solvent. The condensation reaction occurred between 1-hy-droxy-benzotriazole and (E)-4-(4-dimethyl-amino-phenyl-azo)be...

The mol-ecule of the title compound, C(19)H(15)N(3)O, is approximately planar and displays a trans configuration with respect to the C=N and N=N double bonds. An intra-molecular O-H⋯N hydrogen bond generates an S(6) ring motif. The dihedral angles between the hydroxy-phenyl ring and the phenyl and benzene rings are 4.31 (8) and 6.60 (8)°, respectively. The dihedral angle between the phenyl and ...

There are two independent zwitterion mol-ecules (A and B) in the asymmetric unit of the title compound, C17H11N3O, which belongs to the family of azo dyes. The dihedral angle between the benzene ring and the naphthalene ring system is 6.99 (6)° in mol-ecule A and 4.38 (6)° in mol-ecule B. The azo group adopts an E conformation with respect to the -N=N- bond and each of the independent mol-ecule...

Two stable analogues of prostaglandin endoperoxides9.1 1 -azo-prostanoid III (9-1 1 -azo PGH2) and 9.1 1 -methanoepoxy PGH2 (U4661 9 compound)-caused aggregation of washed human platelets and release of a-granule contents. Platelet aggregation induced by these compounds was potentiated by the addition of purified human fibrinogen in a dose-dependent manner. Incubation of prostaglandin endoperox...

The title compound, C15H13N3O3, exists in the E conformation with respect to the azo-methane C=N double bond. The pyridyl and phenyl rings form dihedral angles of 35.67 (8) and 36.65 (7)°, respectively with the central C(=O)N2C unit. In the crystal, N-H⋯O and C-H⋯O hydrogen bonds connect the mol-ecules into chains along the b axis. Another C-H⋯O inter-action connects mol-ecules along the c-axis...