research communications
Open access
The reaction of AgI atom with the unsymmetrical ligand N-(pyridin-4-ylmethyl)pyridine-3-amine afforded a helical chain. The AgI atom adopts a slightly distorted linear coordination geometry. The symmetry-related right- and left-handed helical chains are alternately arranged via AgAg interactions and π–π stacking interactions, resulting in the formation of a two-dimensional supramolecular network.
organic compounds
Open access
The title compound, C23H32N2OS, is a thiourea-based insecticide. The dihedral angle between the phenyl ring and the diisopropyl benzene ring plane is 73.18 (6)°, while that between the plane of the thiourea group and the diisopropyl benzene ring is 86.00 (5)°. Disorder was modelled for the S atom and the two methyl C atoms of the isopropyl group over two sets of sites with an occupancy ratio of 0.742 (4):0.258 (4). In the crystal, N—HS hydrogen bonds link adjacent molecules, forming R22(8) inversion dimers that pack into chains along the b-axis direction.
Keywords: crystal structure.
data reports
Open access
The title compound [systematic name: 4,6-dichloro-N-(2-chlorophenyl)-1,3,5-triazin-2-amine], C9H5Cl3N4, is a triazine fungicide. The dihedral angle between the planes of the triazine and benzene rings is 4.04 (8)°. In the crystal, two weak C—HN hydrogen bonds and short ClCl contacts [3.4222 (4) Å] link adjacent molecules, forming two-dimensional networks parellel to the (112) plane. The planes are linked by weak intermolecular π–π interactions [3.6428 (5) and 3.6490 (5) Å], resulting in a three-dimensional architecture.
data reports
Open access
In the title compound {systematic name: 2-[(3,5,6-trichloropyridin-2-yl)oxy]acetic acid}, the herbicide triclopyr, C7H4Cl3NO3, the asymmetric unit comprises two independent molecules in which the dihedral angles between the mean plane of the carboxylic acid group and the pyridyl ring plane are 79.3 (6) and 83.8 (5)°. In the crystal, pairs of intermolecular O—HO hydrogen bonds form dimers through an R22(8) ring motif and are extended into chains along [100] by weak π–π interactions [ring centroid separations = 3.799 (4) and 3.810 (4) Å]. In addition, short intermolecular ClCl contacts [3.458 (2) Å] connect the chains, yielding a two-dimensional architecture extending parallel to (020). The crystal studied was found to be non-merohedrally twinned with the minor component being 0.175 (4).
data reports
Open access
The title compound, C21H11ClF6N2O3 (systematic name: 1-{4-[2-chloro-4-(trifluoromethyl)phenoxy]-2-fluorophenyl}-3-(2,6-difluorobenzoyl)urea), is a benzoylurea pesticide. The dihedral angles between the central fluorobenzene ring and the terminal difluorophenyl ring and chlorophenyl ring system are 62.15 (5) and 88.03 (5)°, respectively. In the crystal, N—HO hydrogen bonds link adjacent molecules, forming R22(8) inversion dimers that pack into loop chains along the a-axis direction by short FF contacts [2.729 (2) Å]. In addition, the chains are linked by weak C—Hπ and π–π interactions [inter-centroid distances = 3.661 (2) and 3.535 (12) Å], resulting in a three-dimensional architecture.
data reports
Open access
In the title compound [systematic name: cyano(3-phenoxyphenyl)methyl 2,2,3,3-tetramethylcyclopropanecarboxylate], C22H23NO3, which is the pyrethroid insecticide fenpropathrin, the dihedral angle between the cyclopropane ring plane and the carboxylate group plane is 88.25 (11)°. The dihedral angle between the benzene and phenyl rings in the phenoxybenzyl group is 82.99 (4)°. In the crystal, C—HN hydrogen bonds and weak C—Hπ interactions link adjacent molecules, forming loop chains along the b-axis direction.
data reports
Open access
The title compound, C22H22ClN3O5 {systematic name: 2-(propan-2-ylideneaminooxy)ethyl (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionate}, is a herbicide. The asymmetric unit comprises two independent molecules in which the dihedral angles between the phenyl ring and the quinoxaline ring plane are 75.93 (7) and 82.77 (8)°. The crystal structure features C—HO, C—HN, and C—HCl hydrogen bonds, as well as weak π–π interactions [ring-centroid separation = 3.782 (2) and 3.5952 (19) Å], resulting in a three-dimensional architecture.