title: 3,9-Di-1-naphthyl-2,4,8,10-tetra-oxa-spiro-[5.5]undeca-ne.
abstract: In the title compound, C(27)H(24)O(4), the 1,3-dioxane rings have chair conformations. The mol-ecule has non-crystallographic twofold rotation symmetry. The dihedral angle between the naphthalene ring systems is 17.96(4)° In the crystal structure, weak inter-molecular C-H⋯π inter-actions contribute to the crystal packing.
authors.forename: Xiuqin
authors.initials: X
authors.lastname: Zhang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Cui
authors.forename: Bin
authors.initials: B
authors.lastname: Yu
authors.forename: Xiaoqiang
authors.initials: X
authors.lastname: Sun
authors.forename: Qiang
authors.initials: Q
authors.lastname: Chen