1,330 research outputs found
3,4-Dimethyl-N-[(E)-3-nitrobenzylidene]-1,2-oxazol-5-amine
In the title compound, C12H11N3O3, the dihedral angle between the 3-nitrobenzaldehyde and 5-amino-3,4-dimethyl-1,2-oxazole moieties is 2.46 (12)°. The molecule is close to planar, the r.m.s. deviation for the non-H atoms being 0.028 Å. The packing only features van der Waals interactions between the molecules
(2E)-3-[4-(Dimethylamino)phenyl]-1-(2,5-dimethyl-3-thienyl)prop-2-en-1-one
The asymmetric unit of the title compound, C17H19NOS, contains two independent molecules which differ in the dihedral angles between the five- and six-membered rings [12.52 (10) and 4.63 (11)°]. Weak intermolecular C—H⋯O hydrogen bonds link the two independent molecules into pseudocentrosymmetric dimers. In one molecule, the O atom of the carbonyl group is disordered over two positions in a 0.699 (4):0.301 (4) ratio
N-[(E)-1,3-Benzodioxol-5-ylmethylidene]-3,4-dimethyl-1,2-oxazol-5-amine
In the title compound, C13H12N2O3, the dihedral angle between the aromatic rings is 7.94 (12)°. In the crystal, inversion dimers linked by pairs of C—H⋯O hydrogen bonds generate R
2
2(6) loops. Weak π–π [centroid–centroid separations = 3.7480 (13) and 3.9047 (13) Å] and C—H⋯π interactions help to consolidate the packing
2,4,5-Trimethoxybenzaldehyde monohydrate
In the title compound, C10H12O4·H2O, the 2,4,5-trimethoxybenzaldehyde molecule is almost planar (rms deviation = 0.0183 Å). There is an R
1
2(5) ring motif due to O—H⋯O hydrogen bonding. In the crystal, the molecules are stabilized in the form of one-dimensional polymeric chains extending along [010] due to O—H⋯O hydrogen bonding with adjacent water molecules. The H atoms involved in intermolecular hydrogen bonding are disordered over two sets of sites of equal occupancy
Immunological and Histopathological Effect of Plant Extract on Schistocerca Gregaria
The desert Locust, Schistocerca gregaria (Forsk) is one of the serious pests attacking vegetables and wide varieties of other field crops in Egypt and other different countries.The present study was also extended to conduct the insecticidal effect of the most potent extracts Citrullus colocynthis, and Guayacum officinalis extract post formulation on S. gergaria larvae. The present study has been conducted to investigate the effect of plant extract on differential and total haemocyte counts and midgut histopathologiocal changes of S. gregaria Four types of haemocytes were characterized; prohaemocytes (PRs), plasmatocytes (PLs), granulocytes (GRs) and oenocytoids (OEs). The percentage of PRs decreased in insects fed on leaves treated with Citrullus colocynthis, and Guayacum officinalis plant The percentage of PLs increased, while the percentage of GRs decreased in all tested insects treated. The percentages of oenocytoids (OEs) increased in insect fed treated compared with control. Results indicated that THCs of insects fed on leaves treated significantly decreased in all insects treated. also, showed highly histopathological disturbances in the midgut and body wall cells of this pest. Among the most recorded observations are vacuolation, destruction of the cells
N-(4-Chlorobenzylidene)-3,4-dimethylisoxazol-5-amine
The molecule of the title compound, C12H11ClN2O, has E configuration at the azomethine double bond and is virtually planar with a dihedral angle of 1.25 (13)° between the benzene and isoxazole rings. C—H⋯π interactions stabilize the crystal structure
2-Amino-4-phenyl-5,6-dihydrobenzo[h]quinoline-3-carbonitrile–3-amino-1-phenyl-9,10-dihydrophenanthrene-2,4-dicarbonitrile (5/3)
The asymmetric unit of the 5:3 title co-crystal of 2-amino-4-phenyl-5,6-dihydrobenzo[h]quinoline-3-carbonitrile and 3-amino-1-phenyl-9,10-dihydrophenanthrene-2,4-dicarbonitrile, 0.625C20H15N3.0.375C22H15N3, has the atoms of the fused-ring system and those of the amino, cyano and phenyl substitutents overlapped. The fused-ring system is buckled owing to the ethylene linkage in the central ring, the two flanking aromatic rings being twisted by 20.1 (1)°. This ethylene portion is disordered over two positions in a 1:1 ratio. The phenyl ring is twisted by 69.5 (1)° relative to the amino- and cyano-bearing aromatic ring. In the crystal, two molecules are linked by an N—H⋯N hydrogen bond, generating a a helical chain along [010]
(E)-2-Methyl-6-[(1-phenyl-1H-pyrazol-4-yl)methylidene]cyclohexanone
The asymmetric unit of the title compound, C17H18N2O, contains two independent molecules. In both, the cyclohexane ring adopts a flattened chair conformation, and the 3- and 4-methylene C atoms as well as the methyl C atoms are disordered over two positions, the occupancy of the major component being 68 (1)% in one molecule and 64 (1)% in the other. The phenyl and pyrazole rings in both molecules are approximately coplanar, the r.m.s. deviations being 0.048 and 0.015 Å, respectively. Weak intermolecular C—H⋯O hydrogen bonding is present in the crystal structure
(E)-1-(2,5-Dimethyl-3-thienyl)-3-(2-hydroxyphenyl)prop-2-en-1-one
In the title compound, C15H14O2S, the dihedral angle between the aromatic rings is 8.46 –(8)°. The central enone group is planar (r.m.s. deviation = 0.0267 Å) and is oriented at a dihedral angle of 1.20 (9)° with respect to the benzene ring and at 8.27 (9)° with respect to the thiophene group. In the crystal, the molecules are linked into polymeric chains extending along the b axis due to intermolecular O—H⋯O hydrogen bonding. An S(6) ring motif is formed due to a short intramolecular C—H⋯O contact. C—H⋯π interactions involving a methyl group of the 2,5-dimethylthienyl group and the benzene ring are present. π–π interactions between the centroids of the benzene and heterocyclic rings [3.7691 (9) Å] also occur
3-Amino-1-(4-bromophenyl)-9,10-dihydrophenanthrene-2,4-dicarbonitrile
In the title compound, C22H14BrN3, the fused-ring system is buckled owing to the ethylene linkage in the central ring; the two flanking aromatic rings are twisted by 25.9 (1) ° with respect to each other. The phenyl ring is twisted by 77.0 (1)° relative to the amino- and cyano-bearing aromatic ring. In the crystal, adjacent molecules are linked by two N–H⋯N hydrogen bonds, generating a zigzag chain along [101]
- …