title: 2,2-Difluoro-4-phenyl-1,3,2-dioxaborolo[4,5-c]chromen-5-ium-2-ide.
abstract: In the crystal, the inversely oriented mol-ecules of the title compound, C(15)H(9)BF(2)O(3), form stacks along the a axis via π-π inter-actions between parallel phenyl-chromenium fragments. Linked by a network of C-H⋯F inter-actions, the stacks form layers in the ac plane that are dispersively stabilized in the crystal structure. Two F atoms bonded to the B atom are located in the plane perpendicular to the planar skeleton of the mol-ecule made rigid by two intra-molecular C-H⋯O inter-actions.
authors: Michał
authors: M
authors: Wera
authors: Alexander D
authors: AD
authors: Roshal
authors: Jerzy
authors: J
authors: Błażejowski
references: Chem Commun (Camb). 2007 Dec 28;(48):5235-7
references: 18060153
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677
references: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references: 19171970
references: Proc Natl Acad Sci U S A. 1994 Dec 6;91(25):11968-72
references: 7991566