Research Article: (3E,5E)-1-Acryloyl-3,5-bis­(2,4-dichloro­benzyl­idene)piperidin-4-one hemihydrate

Date Published: June 01, 2011

Publisher: International Union of Crystallography

Author(s): Alireza Basiri, Vikneswaran Murugaiyah, Hasnah Osman, Madhukar Hemamalini, Hoong-Kun Fun.


The asymmetric unit of the title compound, C22H15Cl4NO2·0.5H2O, consists of a (3E,5E)-1-acryloyl-3,5-bis­(2,4-dichloro­benzyl­idene)piperidin-4-one mol­ecule and a half-mol­ecule of water (the O atom of the water mol­ecule lies on a twofold axis). The piperidin-4-one ring adopts an envelope conformation. The dihedral angle between the two terminal benzene rings is 8.84 (11)°. In the crystal, mol­ecules are connected by C—H⋯O hydrogen bonds forming supra­molecular chains along the c axis. Furthermore, adjacent chains are inter­connected by the water mol­ecules via O—H⋯O hydrogen bonds.

Partial Text

For details and applications of α,β-unsaturated carbonyl compounds, see: Oh et al. (2006 ▶); El-Subbagh et al. (2000 ▶); Husain et al. (2006 ▶); Favier et al. (2005 ▶). For details of the preparation, see: Dimmock et al. (2000 ▶). For ring conformations, see: Cremer & Pople (1975 ▶).




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