Tris(pentafluorophenyl)borane

Tris(pentafluorophenyl)borane

Names
Preferred IUPAC name Tris(pentafluorophenyl)borane
Other names Perfluorotriphenylboron Tris(pentafluorophenyl)boron
Identifiers
CAS Number	1109-15-5 Y[Sigma-Aldrich]
3D model (JSmol)	Interactive image
ChemSpider	505917 Y
ECHA InfoCard	100.101.316
PubChem CID	582056
UNII	I3WU5E2578 Y
CompTox Dashboard (EPA)	DTXSID6074594
InChI InChI=1S/C18BF15/c20-4-1(5(21)11(27)16(32)10(4)26)19(2-6(22)12(28)17(33)13(29)7(2)23)3-8(24)14(30)18(34)15(31)9(3)25 Y Key: OBAJXDYVZBHCGT-UHFFFAOYSA-N Y
SMILES B(c1c(c(c(c(c1F)F)F)F)F)(c2c(c(c(c(c2F)F)F)F)F)c3c(c(c(c(c3F)F)F)F)F
Properties
Chemical formula	C18F15B
Molar mass	511.98 g/mol
Appearance	colorless solid
Melting point	126 to 131 °C (259 to 268 °F; 399 to 404 K)
Solubility in water	forms adduct
Structure
Molecular shape	trigonal planar
Dipole moment	0 D
Hazards
GHS labelling:[1]
Pictograms
Signal word	Danger
Hazard statements	H315, H319, H335
Precautionary statements	P261, P280, P302+P352, P305+P351+P338
Related compounds
Related compounds	Triphenylborane (C6H5)3B BF3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Tris(pentafluorophenyl)borane, sometimes referred to as "BCF", is the chemical compound (C₆F₅)₃B. It is a white, volatile solid. The molecule consists of three pentafluorophenyl groups attached in a "paddle-wheel" manner to a central boron atom; the BC₃ core is planar. It has been described as the “ideal Lewis acid” because of its high thermal stability and the relative inertness of the B-C bonds. Related fluoro-substituted boron compounds, such as those containing B−CF₃ groups, decompose with formation of B-F bonds. Tris(pentafluorophenyl)borane is thermally stable at temperatures well over 200 °C, resistant to oxygen, and water-tolerant.^[2]