Crystal structures and Hirshfeld surface analyses of 4,4′-{[1,3-phenylenebis(methylene)]bis(oxy)}bis(3-methoxybenzaldehyde) and 4,4′-{[(1,4-phenylenebis(methylene)]bis(oxy)}bis(3-methoxybenzaldehyde)
Acta crystallographica. Section E, Crystallographic communications