[4-(2,2-Diphenyl­vin­yl)phen­yl]diphenyl­amine n-hexane 0.25 solvate

The title compound, C₃₃H₂₅N·0.25C₆H₁₄, was synthesized via the Ullmann reaction. The dihedral angles between the planes of the phen­yl rings of the diphenyl­amine group and the plane of the central benzene ring are 109.2 (3) and 114.1 (8)°.

N-Methyl-2-nitro-N-(4-nitro­benzo­yloxy)-1-phenyl­propan-1-amine

Two compounds were obtained via the addition of N-methyl­hydroxy­lamine to 1-phenyl-2-nitropropene. The structure of the major product, the title compound, (I), C₁₇H₁₇N₃O₆, is reported here. Both asymmetric C atoms (C1 and C2) have the same chirality, either R,R or S,S.

(E)-N′-(4-Benz­yloxy-3-methoxy­benzyl­idene)benzohydrazide

The title compound, C₂₂H₂₀N₂O₃, was prepared by the reaction of 4-benz­yloxy-3-methoxy­benzaldehyde and benzohydrazide. The central vanillin system makes dihedral angles of 18.2 (1) and 14.3 (1)° with the planes of the benzohydrazide and benzyl groups, respectively. The crystal structure is stabilized by inter­molecular N—H...O hydrogen bonding.

4-(2,3-Dichloro­phen­yl)-1-[3-oxo-3-(2-thien­yl)prop­yl]piperazin-1-ium chloride

The title compound, C₁₇H₁₉Cl₂N₂OS⁺·Cl⁻, was synthesized from 2-acetothio­phene, 1-(2,3-dichloro­phen­yl)piperazine and paraformaldehyde. In the cation, the thienyl ring is coplanar with the oxopropyl group. The protonated piperazine ring exhibits a chair conformation. In the crystal packing the cations are connected by C—H...O and C—H...Cl hydrogen bonds.