title: 4,4'-[(2,7-Dibromo-fluorene-9,9-di-yl)dimethyl-ene]dipyridinium bis-(perchlorate).
abstract: In the crystal of the title compound, C(25)H(20)Br(2)N(2) (2+)·2ClO(4) (-), inter-molecular N-H⋯O and C-H⋯O hydrogen bonds, along with C-H⋯π inter-actions, stabilize the crystal structure.
authors: Zongwei
authors: Z
authors: Xuan
authors: Shanshan
authors: S
authors: Zhao
authors: Lude
authors: L
authors: Lu
authors: Xin
authors: X
authors: Wang
authors: Xujie
authors: X
authors: Yang
references: Chem Commun (Camb). 2005 May 14;(18):2405-6
references: 15877143
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677