title: Benzil bis-(ketazine).
abstract: 1,1',2,2'-tetra-phenyl-2,2'-azinodiethanone), C(28)H(20)N(2)O(2), was obtained by the reaction of benzil monohydrazone with chromium(III) nitrate. The dibenzyl-idene hydrazine unit is nearly planar (r.m.s. deviation = 0.073 Å) and the two benzoyl units are oriented almost perpendicular to it [dihedral angle = 87.81 (2), 87.81 (2)°]. The mol-ecules are linked into chains along the c axis by C-H⋯O hydrogen bonds and the chains are cross-linked via C-H⋯π inter-actions involving the benzoyl phenyl rings.
authors.forename: Goutam Kumar
authors.initials: GK
authors.lastname: Patra
authors.forename: Anindita
authors.initials: A
authors.lastname: Mukherjee
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng