Crystal structures of methyl (<i>E</i>)-3-(2-chlorophenyl)-2-({2-[(<i>E</i>)-2-nitrovinyl]phenoxy}methyl)acrylate and methyl (<i>E</i>)-2-({4-chloro-2-[(<i>E</i>)-2-nitrovinyl]phenoxy}methyl)-3-(2-chlorophenyl)acrylate
Acta crystallographica. Section E, Crystallographic communications