Research Article: 6-Bromo-3-{2-[2-(diphenyl­methyl­ene)hydrazin­yl]-1,3-thia­zol-5-yl}-2H-chromen-2-one chloro­form monosolvate

Date Published: May 01, 2011

Publisher: International Union of Crystallography

Author(s): Afsheen Arshad, Hasnah Osman, Chan Kit Lam, Madhukar Hemamalini, Hoong-Kun Fun.

http://doi.org/10.1107/S1600536811012335

Abstract

In the title compound, C25H16BrN3O2S·CHCl3, the thia­zole ring is approximately planar [maximum deviation = 0.002 (3) Å] and makes dihedral angles of 10.75 (14) and 87.75 (15)/2.80 (14)° with the pyran ring system and the two terminal phenyl rings, respectively. The solvent mol­ecule is disordered over two sets of sites, with refined occupancies of 0.639 (7) and 0.361 (7). In the crystal, mol­ecules are connected via pairs of weak C—H⋯O inter­actions, forming centrosymmetric dimers. An intra­molecular C—H⋯O hydrogen bond generates an S(6) ring motif.

Partial Text

For details and applications of coumarin derivatives, see: Siddiqui et al. (2009 ▶); Kamal et al. (2009 ▶); Kalkhambkar et al. (2007 ▶); Gursoy & Karali (2003 ▶). For the synthesis of benzophenone thio­semicarbazone and 6-bromo-3-(2-bromo­acet­yl)-2H-chromen-2-one, see: Yaragatti et al. (2010 ▶); Lobana et al. (2006 ▶). For graph-set notation, see: Bernstein et al. (1995 ▶).

Source:

http://doi.org/10.1107/S1600536811012335