title: 1,2-Diphenyl-2-[4-(4-pyridyl)benzyl-idene-hydrazono]ethan-1-one.
abstract: In the title compound, C(26)H(19)N(3)O, the dimethyl-ene hydrazine (-C=N-N=C-) unit is approximately planar, the torsion angle around the N-N bond being 162.2 (6)°. The phenyl and benzoyl-phenyl rings at one end of the hydrazine unit are aligned at angles of 9.5 (5) and 88.5 (4)°, respectively, with respect to the hydrazine unit, whereas the benzene ring at the other end is twisted by an angle of 14.4 (4)°. In the crystal structure, mol-ecules are linked into centrosymmetric dimers by inter-molecular C-H⋯O hydrogen bonds. The monoclinic crystal under investigation shows pseudo-merohedral twinning with twin fractions of 0.63 and 0.37.
authors.forename: Goutam Kumar
authors.initials: GK
authors.lastname: Patra
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng