1-Methyl-4H-3,1-benzoxazine-2,4(1H)dione.

Acta Crystallogr Sect E Struct Rep Online

Published: February 2010

In its crystal structure, the title compound, C(9)H(7)NO(3), forms π-stacked dimers, with a centroid-centroid distance of 3.475 (5) Å between the benzenoid and the 2,4 dicarbonyl oxazine rings. These dimers then form staircase-like linear chains through further π-stacking between the benzenoid rings [centroid-centroid distance of 3.761 (2) Å]. The methyl-H atoms are disordered due to rotation about the C-N bond and were modeled with equal occupancy.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2983695PMC
http://dx.doi.org/10.1107/S1600536810006094DOI Listing

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