3-(2,4-Dichloro­phen­yl)-1,5-di-2-furylpentane-1,5-dione

In the title compound, C19H14Cl2O4, intra­molecular C—H⋯O and C—H⋯Cl hydrogen bonds generate S(6) and S(5) ring motifs, respectively. In the crystal structure, inter­molecular C—H⋯O inter­actions between symmetry-related mol­ecules involving two methyl­ene groups and an O atom as a bifurcated acceptor generate an R 2 1(6) ring motif. In the mol­ecule, one of the furan rings is rotationally disordered by approximately 180° about the single C—C bond to which it is attached; the refined site-occupancy factors are 0.505 (7) and 0.495 (7). The major component of the disordered furan ring and the benzene ring form a dihedral angle of 88.8 (4)°. The dihedral angle between the major disorder component and the other furan ring is 81.9 (4)°. In addition, the crystal structure is stabilized by further inter­molecular C—H⋯O (×2) hydrogen bonds and C—H⋯π inter­actions

2,5-Dimethoxy­benzaldehyde thio­semicarbazone

In the title mol­ecule, C10H13N3O2S, the dihedral angle between benzene and –N—C(=S)—N—N=C– planes is 9.20 (6)°. The two meth­oxy groups are coplanar with the benzene ring [C—O—C—C torsion angles of −2.31 (18) and −6.45 (17)°]. In the crystal structure, mol­ecules are linked by inter­molecular N—H⋯S, N—H⋯O and C—H⋯O hydrogen bonds, forming a three-dimensional network

1-(2,4-Dichloro­phen­yl)-3-(4-methyl­phen­yl)prop-2-en-1-one

The mol­ecule of the title compound, C16H12Cl2O, adopts an E configuration. The dihedral angle between the two benzene rings is 42.09 (5)°. In the crystal structure, mol­ecules are linked into a three-dimensional framework by weak C—H⋯O inter­actions and by C—H⋯π inter­actions involving the methyl­phenyl ring

(E)-3-(3,4-Dimethoxy­phen­yl)-1-(2-thien­yl)prop-2-en-1-one

The title compound, C15H14O3S, has two symmetry-independent mol­ecules in the asymmetric unit with almost identical geometry. The dihedral angle between the benzene and thio­phene rings is 1.61 (11)° in one mol­ecule and 7.21 (11)° in the other. In both mol­ecules, C—H⋯O hydrogen bonds generate rings of graph-set motif S(5). The crystal structure is stabilized by C—H⋯O hydrogen bonds, C—H⋯π inter­actions and π–π inter­actions involving the benzene and thio­phene rings, with centroid–centroid distances of 3.5249 (13) and 3.6057 (13) Å

(E)-1-(4-Bromo­phen­yl)-3-(2-chloro­phen­yl)prop-2-en-1-one

The structure of the title compound, C15H10BrClO, comprises two substituted benzene rings bridged by a prop-2-en-1-one group and exists in an E configuration about the C=N double bond. The dihedral angle formed between the 4-bromo­phenyl and 2-chloro­phenyl rings is 23.77 (18)°. In the crystal structure, the mol­ecules are linked by weak C—H⋯O inter­actions, forming a supra­molecular zigzag chain. Intramolecular C—H⋯Cl and C—H⋯O hydrogen bonds are also present

(E)-3-(4-Chloro­phen­yl)-1-(2-thien­yl)prop-2-en-1-one

The title compound, C13H9ClOS, adopts an E configuration with respect to the C=C double bond of the propenone unit. The thienyl and benzene rings are slightly twisted from each other, making a dihedral angle of 6.38 (3)°. An intra­molecular C—H⋯O hydrogen bond generates an S(5) ring motif. A weak inter­molecular C—H⋯O inter­action, a short intra­molecular S⋯O contact [2.932 (2) Å] and two π–π inter­actions between the thienyl and benzene rings are observed. The centroid–centroid distances of the π–π inter­actions are 3.7899 (16) and 3.7891 (16) Å