Received 20 April 2012
aDepartment of Physics, S.M.K. Fomra Institute of Technology, Thaiyur, Chennai 603 103, India,bDepartment of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India, and cDepartment of Physics, Presidency College (Autonomous), Chennai 600 005, India
Correspondence e-mail: email@example.com
In the title compound, C19H19NO4, the dihedral angle between the mean planes through the benzene rings is 82.18 (7)°. The C=N double bond is trans-configured. The molecules are linked into centrosymmetric dimers via pairs of O-HN hydrogen bonds with the motif R22(6). The crystal packing also features C-HO interactions. The methyl group attached to one of the aromatic rings is disordered over two almost equally occupied positions [occpancy ratio = 0.51 (4):0.49 (4)].
For information on oximes, see: Chaudhuri (2003). For a related structure, see: SakthiMurugesan et al. (2011).
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 and PLATON.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BT5884 ).
The authors thank Dr Babu Varghese, SAIF, IIT, Chennai, India for the data collection.
Bruker (2004). APEX2 and SAINT. Bruker AXS Inc., Madison Wisconsin, USA.
Chaudhuri, P. (2003). Coord. Chem. Rev. 243, 143-168.
SakthiMurugesan, K., Govindan, E., Srinivasan, J., Bakthadoss, M. & SubbiahPandi, A. (2011). Acta Cryst. E67, o2754.
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.