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The title compound, C17H16Cl2N2, adopts a `vault' conformation. The mol­ecules are linked by a pair of C—H⋯N hydrogen bonds into a centrosymmetric dimer with an R22(18) ring. These dimers are linked by a weak centrosymmetric π–π inter­action into a chain along the [001] direction, and these chains are connected by van der Waals inter­actions, resulting in a three-dimensional network structure. [ABSTRACT FROM AUTHOR]

The title complex, [Cu(C21H14NO)2], possesses a crystallographically imposed center of symmetry. The CuII atom is coordinated by the two bidentate ligands in a trans arrangement, forming a CuN2O2 square-planar configuration, with Cu—O and Cu—N bond lengths of 1.871 (3) and 1.981 (3) Å, respectively. [ABSTRACT FROM AUTHOR]

In the title compound, C30H28N2S4, the S—S bond length is 1.9910 (13) Å. In the absence of classical hydrogen bonds and π–π inter­actions, the crystal packing is stabilized by van der Waals forces. [ABSTRACT FROM AUTHOR]

In the title mol­ecule, C25H24O4, the central phenyl ring makes dihedral angles of 85.92 (12) and 78.21 (13)° with the two outer benzene rings. The crystal packing is stabilized by van der Waals forces. [ABSTRACT FROM AUTHOR]

In the title mol­ecule (systematic name: 10,26-dimethyl-2,5,8,15,18,21-hexa­oxatricyclo­[20.4.0.09,14]tetra­cosa-9,11,13,22,24,26-hexa­ene), C22H28O6, the two benzene rings make a dihedral angle of 63.9 (2)°, indicating a boat-like mol­ecular conformation. The crystal packing is mainly stabilized by van der Waals forces. [ABSTRACT FROM AUTHOR]

In the title compound, C21H18N2O2, synthesized by the reaction of benzaldehyde with 2-acetyl­pyridine and KOH, the phenyl ring makes dihedral angles of 88.5 (1) and 83.9 (1)° with the two pyridine rings. The crystal packing is stabilized by weak inter­molecular C—H⋯O hydrogen bonds, with an H⋯O distance of 2.47 Å, and by van der Waals forces. [ABSTRACT FROM AUTHOR]