Research Article: Benzil bis­(ketazine)

Date Published: August 01, 2009

Publisher: International Union of Crystallography

Author(s): Goutam Kumar Patra, Anindita Mukherjee, Seik Weng Ng.


The title compound (systematic name: 1,1′,2,2′-tetra­phenyl-2,2′-azinodiethanone), C28H20N2O2, was obtained by the reaction of benzil monohydrazone with chromium(III) nitrate. The dibenzyl­idene 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 mol­ecules are linked into chains along the c axis by C—H⋯O hydrogen bonds and the chains are cross-linked via C—H⋯π inter­actions involving the benzoyl phenyl rings.

Partial Text

For the synthesis of title compound using copper bis­(acetyl­acetonate) as catalyst, see: Ibata & Singh (1994 ▶); Singh (1983 ▶).




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