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In the title compound, (C14H16N4)2[Mo8O26], the β-octa­molybdate anion is centrosymmetric. N—H...O hydrogen bonds link the diimidazolium cations and the polyoxidoanions into a chain structure along [100]. π–π inter­actions between the imidazole rings and between the imidazole and benzene rings [centroid–centroid distances = 3.611 (2) and 3.689 (3) Å, respectively] connect the chains.

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In the title compound, C12H6F2N2O2, the 2,2-difluoro-1,3-benzodioxole ring system is approximately planar [maximum deviation = 0.012 (2) Å] and its mean plane is twisted with respect to the pyrrole ring, making a dihedral angle of 2.51 (9)°. In the crystal, N—H...N hydrogen bonds link the mol­ecules into chains running along the a axis. π–π stacking is also observed between parallel benzene rings of adjacent mol­ecules, the centroid–centroid distance being 3.7527 (13) Å.

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In the title compound, C2H10N22+·C11H10O62−, the two acetate groups of the cation form dihedral angles of 74.2 (4) and 63.9 (5)° with the central benzene ring. In the crystal, N—H...O hydrogen bonds link the cations and anions into layers parallel to the ab plane.

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In the title compound, [ZnCl2(C20H18N4)]n, the ZnII ion lies on a twofold rotation axis and is four-coordinated in a tetra­hedral geometry defined by two Cl anions and two N atoms from two 4,4′-bis­[(imidazol-1-yl)meth­yl]biphenyl ligands. The mid-point of the ligand is located on an inversion center, and shows a trans conformation. The ligands link the ZnII ions, forming a chain structure along [10-1].

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The asymmetric unit of the title compound, [ZnCl2(C14H14N4)]n, contains a ZnII ion situated on a twofold rotation axis and one-half of a 1-{4-[(1H-imidazol-1-yl)meth­yl]benz­yl}-1H-imidazole (L) ligand with the benzene ring situated on an inversion center. The ZnII ion is coordinated by two chloride anions and two N atoms from two L ligands in a distorted tetra­hedral geometry. The L ligands bridge ZnCl2 fragments into polymeric chains parallel to [20-1].

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The asymmetric unit of the title compound, C13H12N2O2, obtained in a search for analogs of the fungicide fludioxonil [systematic name: 4-(2,2-difluoro-1,3-benzodioxol-4-yl)-1H-pyrrole-3-carbonitrile], contains two independent mol­ecules, A and B. The benzene and pyrrole rings are inclined to each other at 38.5 (1) and 29.3 (1)° in mol­ecules A and B, respectively. In the crystal, bifurcated N—H...(O,O) hydrogen bonds link A mol­ecules into chains along [001], while B mol­ecules are linked into layers parallel to the bc plane via bifurcated N—H...(N,N) hydrogen bonds.

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In the title herbicideh/phytocide, known as imaza­pic, C14H17N3O3, the pyridine and imidazole rings are almost coplanar [dihedral angle = 3.08 (5)°]. An intra­molecular O—H...N hydrogen bond occurs. In the crystal, an N—H...O hydrogen bond links mol­ecules into a chain parallel to [010].

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In the title mol­ecule, C9H7F3O4S, the S and the methyl C atoms of the methyl­sulfonyl group deviate from the benzene ring plane by 0.185 (2) and −1.394 (3) Å, respectively. In the crystal, O—H...O hydrogen bonds link the mol­ecules into chains along [201]. Weak C—H...O inter­actions further link these chains into layers parallel to the ac plane.

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In the anion of the title mol­ecular salt, C4H12N22+·C11H10O62−, the two acetate groups form torsion angles of 74.1 (1) and 7.1 (1)° with the central benzene ring, and the cation exhibits a chair conformation. In the crystal, N—H...O hydrogen bonds link the components into a two-dimensional supra­molecular network lying parallel to the ab plane. A number of C—H...O inter­actions consolidate the packing.
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