نتایج جستجو برای: 15 tetraaryl 1h imidazole
تعداد نتایج: 529575 فیلتر نتایج به سال:
The title compound, C3H2N4O4, forms crystals with two mol-ecules in the asymmetric unit which are conformationally similar. With the exception of the O atoms of the nitro groups, the mol-ecules are essentially planar. In the crystal, adjacent mol-ecules are associated by N-H⋯N hydrogen bonds involving the imidazole N-H donors and N-atom acceptors of the unsaturated nitro-gen of neighboring ring...
BACKGROUND Azaheterocycles are an important class of compounds because of their highly potent medicinal activities, and the imidazole subcategory is of special interest in regard to drug discovery research. FINDINGS An expeditious synthetic protocol of 2-aryl-4-phenyl-1H-imidazoles has been accomplished by reacting phenylglyoxal monohydrate, ammonium acetate, and aldehyde under sonication. Fo...
In the title compound, [NiCl(2)(C(10)H(10)N(2))(4)], the Ni(II) ion is located on an inversion center being coordinated by four N atoms from two pairs of symmetry-related 1-benzyl-1H-imidazole ligands and two chloride anions in a distorted octa-hedral geometry. Weak inter-molecular C-H⋯Cl hydrogen bonds link the mol-ecules into layers parallel to the ab plane.
The mol-ecule of the title compound, C(3)H(2)ClN(3)O(2), is almost planar; the dihedral angle between the imidazole ring and the nitro group is 1.7 (2)°. In the crystal structure, pairs of inter-molecular C-H⋯O hydrogen bonds link inversion-related mol-ecules into dimers, generating R(2) (2)(10) ring motifs. The dimers are inter-connected into two-dimensional networks parallel to (102) via inte...
In the title 1:1 adduct, C(7)H(6)O(3)·C(3)H(4)N(2), the crystal packing features π-π stacking inter-actions [centroid-centroid distances = 3.799 (2) and 3.753 (1) Å] as well as N-H⋯(O,O) O-H⋯O and C-H⋯O hydrogen bonds.
Ethyl 4-(butylamino)-3-nitrobenzoate upon “one-pot” nitro-reductive cyclization using sodium dithionite and substituted aldehyde in dimethyl sulphoxide affords ethyl 1-butyl-2-(2-hydroxy-4-methoxyphenyl)-1H-benzo[d]imidazole-5-carboxylate an 87% yield. The structural characterization was determined by Fourier-transfer infrared spectroscopy (FT-IR), Proton nuclear magnetic resonance (1H-NMR), Ca...
A series of new 2-butyl-1H-benzo[4,5]imidazo[1,2-a]imidazo[4,5-e]pyridine-5-carbonitrile derivatives were synthesized by the self cyclisation of (E)-2-(1H-benzo[d]imidazol-2-yl)-3-(2-butyl4-chloro-1H-imidazol-5-yl)acrylonitrile in the presence of piperidine as catalyst, which in turn were prepared by the condensation of substituted N-alkyl 2-butyl-4-chloro-1H-imidazole-5-carbaldehydes with 2-cy...
The kinetics and mechanism of the reaction of 5-nitro-1H-benzo[d] imidazole to produce 6-nitro-1H-benzo[d] imidazole was studied by employing hybrid meta-density functional theory. MPWBlK/6-31+G** level calculations were carried out to obtain energies and optimize the geometries of all stationary points along the PES, and determine the harmonic vibrational frequencies. Two transition states (TS...
The title compound, [Co(2)Cl(4)(C(7)H(8)N(4))(2)], contains a dinuclear complex molecule in which each Co(II) atom is tetra-hedrally coordinated by two N atoms and two chloride ions. The 1,1'-methyl-enebis(1H-imidazole) ligands adopt a bis-monodentate bridging mode linking two Co(II) atoms.
The synthesis of two molecular iron complexes, a dinuclear iron(iii,iii) complex and a nonanuclear iron complex, based on the dinucleating ligand 2,2'-(2-hydroxy-5-methyl-1,3-phenylene)bis(1H-benzo[d]imidazole-4-carboxylic acid) is described. The two iron complexes were found to drive the oxidation of water by the one-electron oxidant [Ru(bpy)3](3+).
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