Potassium tetraphenylborate

Potassium tetraphenylborate

IUPAC name Potassium tetraphenylboranuide
Identifiers
CAS number	3244-41-5
PubChem	6432333
ChemSpider	4937589^Y
Jmol-3D images	Image 1
SMILES [K+].c1c(cccc1)[B-](c2ccccc2)(c3ccccc3)c4ccccc4
InChI InChI=1S/C24H20B.K/c1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24;/h1-20H;/q-1;+1^Y Key: MAMCUZQNCMYPCY-UHFFFAOYSA-N^Y InChI=1/C24H20B.K/c1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24;/h1-20H;/q-1;+1 Key: MAMCUZQNCMYPCY-UHFFFAOYAU
Properties
Molecular formula	C₂₄H₂₀BK
Molar mass	358.3249
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Potassium tetraphenylborate (IUPAC name: Potassium tetraphenylboranuide) (KBC₂₄H₂₀ or KBPh₄) is a water-insoluble salt of potassium (1.8×10^-4 g/L). It is, however, soluble in organic solvents.

The insolubility of this compound has been used to determine the concentration of potassium ions by precipitation and gravimetric analysis:^[1]

K⁺ (aq) + B(Ph)₄⁻ (aq) → KB(Ph)₄ (s)

References

^ Engelbrecht, R. M.; McCoy, F. A. (1956). "Determination of Potassium by Tetraphenylborate Method". Acc. Chem. Res. 28 (11): 1772. doi:10.1021/ac60119a040.

External links

Potassium tetraphenylborate Jmol Page