title: 2,2'-[1,1'-(Heptane-1,7-diyldioxy-dinitrilo)diethyl-idyne]di-1-naphthol.
abstract: The mol-ecule of the title compound, C(31)H(34)N(2)O(4), adopts an L-shaped configuration, in which the naphthalene units are approximately perpendicular, making a dihedral angle of 87.89 (3)°. Intramolecular H-bonds are formed between the OH substituents and the N atoms at each end of the molecule. In the crystal structure, each mol-ecule links six other mol-ecules into an infinite three-dimensional network supra-molecular structure, which is built from one-dimensional zigzag chains via weak C-H⋯π stacking and inter-molecular C-H⋯O hydrogen bonds.
authors.affiliation: School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, People's Republic of China.
authors.forename: Wen-Kui
authors.initials: WK
authors.lastname: Dong
authors.forename: Jian-Chao
authors.initials: JC
authors.lastname: Wu
authors.forename: Yin-Xia
authors.initials: YX
authors.lastname: Sun
authors.forename: Jun-Feng
authors.initials: JF
authors.lastname: Tong
authors.forename: Shang-Sheng
authors.initials: SS
authors.lastname: Gong