Potassium hexafluorophosphate

Potassium hexafluorophosphate

Chembox new
ImageFile = Potassium hexafluorophosphate.png ImageSize = 150px
IUPACName = Potassium hexafluorophosphate
OtherNames =
Section1 = Chembox Identifiers
CASNo = 17084-13-8
PubChem =
SMILES =


Section2 = Chembox Properties
Formula = F6KP
MolarMass = 184.06
Appearance = colourless solid
Density = 2.75 g/mL
MeltingPt = 575 °C
BoilingPt =
Solubility = 0.432M (25 °C)

Section3 = Chembox Hazards
MainHazards = toxic
FlashPt =
Autoignition =

Potassium hexafluorophosphate is the chemical compound with the formula KPF6. This colourless salt consists of potassium cations and hexafluorophosphate anions. It is prepared by the reaction: [cite journal | author = Woyski, M. M. | title = Hexafluorophosphates of Sodium, Ammonium, and Potassium | journal = Inorg. Synth. | volume = 3 | pages = 111–117 | doi = 10.1002/9780470132340.ch29 | year = 1950] :PCl5 + KCl + 6 HF → KPF6 + 6 HClThis exothermic reaction is conducted in liquid hydrogen fluoride. The salt is stable in hot alkaline aqueous solution, from which it can be recrystallized. The sodium and ammonium salts are more soluble in water whereas the rubidium and caesium salts are less so.

KPF6 is a common laboratory source of the hexafluorophosphate anion, a non-coordinating anion that confers lipophilicity to its salts. It salts are often less soluble than the closely related tetrafluoroborates.

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Hexafluorophosphate de potassium — Structure de l hexafluorophosphate de potassium Général Nom IUPAC …   Wikipédia en Français

  • 1-Butyl-3-methylimidazolium hexafluorophosphate — chembox new ImageFile = bmim.svg ImageSize= IUPACName=1 butyl 3 methylimidazol 3 ium hexafluorophosphate OtherNames= BMIM PF6 Section1=Chembox Identifiers CASNo= 174501 64 5 PubChem=2734174 SMILES= CCCCN1C=C [N+] (=C1)C.F [P ] (F)(F)(F)(F)F… …   Wikipedia

  • Sodium hexafluorophosphate — IUPAC name sodium hexafluorophosphate …   Wikipedia

  • Dictionary of chemical formulas — This is a list of chemical compounds with chemical formulas and CAS numbers, indexed by formula. This complements alternative listings to be found at list of inorganic compounds, list of organic compounds and inorganic compounds by element. Table …   Wikipedia

  • Liste de composés inorganiques K — Sommaire 1 Potassium 2 Krypton A B C D E F G H I K L …   Wikipédia en Français

  • Liste des composés inorganiques K — Liste de composés inorganiques K Sommaire 1 Potassium 2 Krypton // A B C D …   Wikipédia en Français

  • Tetrafluoroborate — is the anion BF4−. This tetrahedral species is isoelectronic with many stable and important species including tetrafluoromethane, CF4, and the closely related anion perchlorate, ClO4−. It arises by the reaction of fluoride salts with the Lewis… …   Wikipedia

  • Liste de composés inorganiques T — Sommaire 1 Tantale 2 Terbium 3 Technétium 4 Tellure 5 …   Wikipédia en Français

  • Liste des composés inorganiques T — Liste de composés inorganiques T Sommaire 1 Tantale 2 Terbium 3 Technétium 4 Tellure …   Wikipédia en Français

  • Palladium(II) acetate — Chembox new Name = Palladium(II) acetate ImageFile = Palladium(II) acetate.jpg ImageName = Palladium(II) acetate IUPACName = Palladium(II) acetate OtherNames = Palladium diacetate hexakis(acetato)tripalladium bis(acetato)palladium Section1 =… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”