title: 4,4'-Dibromo-7,7'-dimeth-oxy-1,1'-spiro-biindane.
abstract: In the title compound, C(19)H(18)Br(2)O(2), the dihedral angle between the two benzene rings of the spiro-biindane molecule is 70.44 (8)°. In the crystal, mol-ecules are inter-connected along the c axis by C-H⋯O hydrogen bonds and π-π stacking [centroid-centroid distance = 3.893 (2) Å] inter-actions, forming an infinite chain structure. The chains are further inter-connected through another set of C-H⋯O hydrogen bonds, forming layers approximately parallel to the bc plane.
authors: Department of Chemistry, Capital Normal University, Beijing 100048, People's Republic of China.
authors: Min
authors: M
authors: Yao
authors: Yanfeng
authors: Y
authors: Ding
authors: Zi-Jia
authors: ZJ
authors: Wang
authors: Yuheng
authors: Y
authors: Deng
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