Abstract
The crystal structure of the title salt, C44H38P2 2+2BF4 −, consists of discrete dications interlaced with the BF4 − counter-ions. In each cation, both phosphonium groups lie on the same side of the plane of the central benzene ring. The tetrafluoroborate anions are involved in intensive thermal motion, thus some B—F bond lengths [range 1.329 (6) to 1.391 (6) Å] deviate significantly from their standard values.
Highlights
Structure Reports OnlineKey indicators: single-crystal X-ray study; T = 173 K; mean (C–C) = 0.007 A; R factor = 0.046; wR factor = 0.113; data-to-parameter ratio = 9.6
The crystal structure of the title salt, C44H38P22+2BF4À, consists of discrete dications interlaced with the BF4À counter-ions
Both phosphonium groups lie on the same side of the plane of the central benzene ring
Summary
Key indicators: single-crystal X-ray study; T = 173 K; mean (C–C) = 0.007 A; R factor = 0.046; wR factor = 0.113; data-to-parameter ratio = 9.6. The crystal structure of the title salt, C44H38P22+2BF4À, consists of discrete dications interlaced with the BF4À counter-ions. In each cation, both phosphonium groups lie on the same side of the plane of the central benzene ring. For salts containing the triphenylphosphonium cation, see: Kariuki et al (2009). For applications of phosphonium salts as ionic liquids, see: Cieniecka-Roslonkiewicz et al (2005). For a similar mono-phosphonium compound, see: Hafiz (2008)
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