title: Triclinic polymorph of 4-[4-(4-formyl-phen-oxy)but-oxy]benzaldehyde.
abstract: The title compound, C18H18O4, is a triclinic polymorph of the previously reported monoclinic polymorph [Han & Zhen (2005 ▶). Acta Cryst. E61, o4358-o4359]. In the crystal of the triclinic polymorph, molecules are linked by two pairs of C-H⋯O hydrogen bonds, forming a two-dimensional network parallel to (102), and enclosing loops with graph set motifs of R2(2)(8) and R2(2)(6).
authors.affiliation: Department of Chemistry, J. J. Strossmayer University, Osijek, Franje Kuhača 20, HR-31000 Osijek, Croatia.
authors.forename: Tomislav
authors.initials: T
authors.lastname: Balić
authors.forename: Berislav
authors.initials: B
authors.lastname: Marković
authors.forename: Ivana
authors.initials: I
authors.lastname: Balić