Abstract
The racemic title compound, C20H20N4O4, crystallizes with Z' = 2 in the space group P2(1)/c. Each independent molecule exhibits approximate twofold rotation symmetry, but conformational differences between the molecules preclude any higher symmetry. The molecules are linked into complex sheets by a combination of four C-H center dot center dot center dot O hydrogen bonds and two C-H center dot center dot center dot pi(arene) hydrogen bonds.
Original language | English |
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Number of pages | 4 |
Journal | Acta Crystallographica Section C-Crystal Structure Communications |
Volume | 61 |
DOIs | |
Publication status | Published - Sept 2005 |