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Figure 3
Sphere models of the crystal structures of (a) 7-fluoro-4-oxo-4H-chromene-3-carbaldehyde (Asad et al., 2011 ), (b) 7-chloro-4-oxo-4H-chromene-3-carbaldehyde (Ishikawa, 2014b ), (c) 7-bromo-4-oxo-4H-chromene-3-carbaldehyde (Ishikawa, 2014c ) and (d) the title compound (this work). |
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