| Summary: | Molecules of the title compound, C16H16N4O7, are not planar
with a dihedral angle of 5.50 (11)� between the substituted
benzene rings. The two meta-methoxy groups of the 3,4,5-
trimethoxybenzene moiety lie in the plane of the attached ring
[Cmethyl–O–C–C torsion angles �0.1 (4)� and �3.7 (3)�] while
the para-methoxy substituent lies out of the plane [Cmethyl—
O—C—C, �86.0 (3)�]. An intramolecular N—H� � �O
hydrogen bond involving the 2-nitro substituent generates
an S(6) ring motif. In the crystal structure, molecules are
linked by weak C—H� � �O interactions into screw chains, that
are arranged into a sheet parallel to the bc plane. These sheets
are connected by �–� stacking interactions between the nitro
and methoxy substituted aromatic rings with a centroid–
centroid separation of 3.9420 (13) A ° . C—H� � �� contacts
further stabilize the two-dimensional network.
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