Received 30 March 2011
Accepted 25 April 2011
Online 7 May 2011
|Single-crystal X-ray study|
|T = 293 K|
|Mean (C-C) = 0.004 Å|
|R = 0.044|
|wR = 0.128|
|Data-to-parameter ratio = 13.4|
aCollege of Science, Northwest A&F University, Yangling 712100, Shannxi Province, People's Republic of China, and bResearch and Development Center of Biorational Pesticide, Northwest A&F University, Yangling 712100, Shannxi Province, People's Republic of China
Correspondence e-mail: firstname.lastname@example.org
In the crystal structure of the title compound, C30H22O7, neighbouring benzene rings are twisted out of the plane of the five-membered ring by 27.30 (3) and 45.47 (3)°.
For background to the use of 3,4-diaryl-substituted maleic anhydride derivatives as photochromic materials, see: Irie (2000). For related structures, see: Liu et al. (2003).
Mr = 494.48
Orthorhombic, P b c n
a = 16.981 (5) Å
b = 15.291 (5) Å
c = 18.665 (5) Å
V = 4846 (2) Å3
Z = 8
Mo K radiation
= 0.10 mm-1
T = 293 K
0.32 × 0.30 × 0.26 mm
Bruker APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1998) Tmin = 0.970, Tmax = 0.975
21827 measured reflections
4522 independent reflections
2555 reflections with I > 2(I)
Rint = 0.059
Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: NC2225 ).
Financial support from the Program of the National Department Benefit Research Foundation of China (No. 200903052) is greatly appreciated.
Bruker (2005). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Irie, M. (2000). Chem. Rev. 100, 1683-1684.
Liu, Y., Wang, Q., Liu, Y. & Yang, X. (2003). Chem. Phys. Lett. 373, 338-343.
Sheldrick, G. M. (1998). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.