Figure 1
Sphere models of the crystal structures of (a) 7-chloro-4-oxo-4H-chromene-3-carbaldehyde (Ishikawa, 2014b), (b) 8-chloro-4-oxo-4H-chromene-3-carbaldehyde (Ishikawa, 2014a), (c) 6,8-dichloro-4-oxochromene-3-carbaldehyde (Ishikawa & Motohashi, 2013) and (d) the title compound. |