Received 9 September 2013
The molecule of the title compound, C22H12N4O2, is located on a twofold rotation axis. The dihedral angle between the furan and pyrazine rings is 34.8 (7)°, and that between the furan rings is 46.92 (7)°. A - stacking interaction occurs between adjacent pyrazino[2,3-f][1,10]phenanthroline units, with an interplanar distance of 3.5862 (12) Å.
For the properties of 2,3-dithienylpyrazino[2,3-f][1,10]phenanthroline, see: Bencini et al. (1999); Li et al. (2010). For the structure of 2,3-bis(thiophen-2-yl)pyrazino[2,3-f][1,10]phenanthroline, see: Zheng et al. (2012) and for the structure of 3-carboxypyrazino[2,3-f][1,10]-phenanthrolin-9-ium-2-carboxylate see: Zhang et al. (2010).
Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008b); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008b); molecular graphics: SHELXTL (Sheldrick, 2008b); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BT6933 ).
The authors are grateful for financial support from the Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences.
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