Abstract
The crystal structures are reported of the 6,6-di-fluoro-6H-dibenzo[c,e][1,2]oxaborinin-6-ide (or 9,9-di-fluoro-10-oxa-9-boraphenanthren-9-ide) anion with two different cations, namely, potassium 6,6-di-fluoro-6H-dibenzo[c,e][1,2]oxaborinin-6-ide, K+·C12H8BF2O-, (II), featuring a polymeric structure, and bis-(tetra-phenyl-phospho-nium) bis-(6,6-di-fluoro-6H-dibenzo[c,e][1,2]oxaborinin-6-ide) aceto-nitrile tris-olvate, 2C24H20P+·2C12H8BF2O-·3CH3CN, (III), which is composed of discrete cations, anions and aceto-nitrile solvent mol-ecules linked by C-H⋯O, C-H⋯N and C-H⋯F hydrogen bonds. There are only minor differences in the geometrical parameters of the anions in these structures.
Highlights
Oxaboraphenanthrenes are interesting building blocks for organic optoelectronic materials
The asymmetric unit of (III) consists of two C12H8BF2OÀ anions (Figs. 3 and 4), two C24H20P+ tetraphenylphosphonium cations and three acetonitrile solvent molecules, one of which is disordered over two sets of sites
In the extended structure of (III) (Fig. 7), the component species are linked by numerous C—HÁ Á ÁO, C—HÁ Á ÁN and C— HÁ Á ÁF interactions (Table 1) into a three-dimensional network
Summary
Oxaboraphenanthrenes are interesting building blocks for organic optoelectronic materials. We have prepared various 9-substituted oxaboraphenanthrene derivatives and investigated their stability and luminescence behavior (Budanow et al, 2016). The starting material for our approach was 9-chloro-10,9-oxaboraphenanthrene (Budanow et al, 2014), which is, an air-sensitive compound. We were interested in air-stable precursors for oxaboraphenanthrene preparation. Because certain borinic acids are readily fluorinated with KHF2, we tested whether (I) (Fig. 1) could be transformed into a fluoroborane upon treatment with KHF2. Subsequent treatment of (II) with Ph4PBr gave the 9,9-difluorido-10,9-oxaboraphenanthrene salt as an acetonitrile solvate (III). The crystal structures of (II) and (III) are described
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Acta crystallographica. Section E, Crystallographic communications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
