105560-52-9

Basic information

• Product Name: Potassium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate
• Synonyms: POTASSIUM TETRAKIS[3,5-BIS(TRIFLUOROMETHYL)PHENYL]BORATE;TETRAKIS[3,5-BIS(TRIFLUOROMETHYL)PHENYL]BORON POTASSIUM;KTFPB
• CAS NO: 105560-52-9
• Molecular Formula: C₃₂H₁₂BF₂₄*K
• Molecular Weight: 902.31
• Mol File: 105560-52-9.mol
• Article Data: 8

Chemical Properties

• Melting Point: 126-129 °C
• Appearance: /
• BRN: 8893801
• CAS DataBase Reference: Potassium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate(CAS DataBase Reference)
• NIST Chemistry Reference: Potassium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate(105560-52-9)
• EPA Substance Registry System: Potassium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate(105560-52-9)

Safety Data

• Safety Statements: 22-24/25
• WGK Germany: 3
• F: 3-10
• Hazardous Substances Data: 105560-52-9(Hazardous Substances Data)

Usage

General Description

Potassium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate is a chemical compound that is commonly used as a source of highly stable and non-coordinating anions in organic and inorganic chemistry. It is a salt consisting of potassium cations and tetrakis[3,5-bis(trifluoromethyl)phenyl]borate anions. Potassium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate is known for its high thermal and chemical stability, making it a valuable reagent in various synthetic and catalytic processes. Additionally, it can also be used as a phase transfer catalyst and as a non-coordinating anion in the design of novel molecular materials and polymers. Furthermore, the unique properties of this compound make it a valuable tool for researchers in the field of inorganic and organometallic chemistry.

InChI:InChI=1/C32H12BF24.K/c34-25(35,36)13-1-14(26(37,38)39)6-21(5-13)33(22-7-15(27(40,41)42)2-16(8-22)28(43,44)45,23-9-17(29(46,47)48)3-18(10-23)30(49,50)51)24-11-19(31(52,53)54)4-20(12-24)32(55,56)57;/h1-12H;/q-1;+1

Upstream product

• 328-70-1 3,6-bis(trifluoromethyl)bromobenzene 
• 10294-34-5 boron trichloride 
• 109-63-7 boron trifluoride diethyl etherate 
• 328-73-4 3,5-bis(trifluoromethyl)iodobenzene 
• 584-08-7 potassium carbonate 
• 24689-80-3 benzyl potassium 
• 40949-94-8 potassium hexamethylsilazane 
• 160298-76-0 silver(I) tetrakis(3,5-bis(trifluoromethyl)phenyl)borate 

Downstream Products

• 160298-76-0 silver(I) tetrakis(3,5-bis(trifluoromethyl)phenyl)borate 
• 848737-66-6 [Ag(MeCN)₂][B{C₆H₃(CF₃)₂-3,5}₄] 
• 858355-10-9 [RuCp*(NCMe)3][B(3,5-(CF₃)2C₆H₃)4] 
• 1254729-59-3 [ruthenium(II)(tricarbonyl)(chloride)bis(triphenylphosphane)] tetra(3,5-bistrifluoromethylphenyl)borate 

Relevant articles and documents

Adaptive Behavior of Dynamic Orthoester Cryptands

The integration of dynamic covalent bonds into macrocycles has been a tremendously successful strategy for investigating noncovalent interactions and identifying effective host–guest pairs. While numerous studies have focused on the dynamic responses of macrocycles and larger cages to various guests, the corresponding constitutionally dynamic chemistry of cryptands remains unexplored. Reported here is that cryptands based on orthoester bridgeheads offer an elegant entry to experiments in which a metal ion selects its preferred host from a dynamic mixture of competing subcomponents. In such dynamic mixtures, the alkali metal ions Li+, Na+, K+, Rb+, and Cs+exhibit pronounced preferences for the formation of cryptands of certain sizes and donor numbers, and the selection is rationalized by DFT calculations. Reported is also the first self-assembly of a chiral orthoester cryptate and a preliminary study on the use of stereoisomers as subcomponents.

Syntheses, characterisation and solid-state study of alkali and ammonium BArF salts

A new synthetic protocol for synthesising a number of BArF derivatives has been developed. Single crystal X-ray analysis of an array of alkali metal and ammonium salts has allowed the determination of the coordination sphere and/or the map of short contacts of the positively charged atoms. The increasing number of coordination bonds and/or short contacts between the alkali metal cation and the surrounding atoms has been rationalised in terms of the size of the alkali metal centre. It has also been demonstrated that an increase in the number of coordination bonds and/or short contacts translates into longer M-F distances. In the case of the ammonium BArF salts, the N-B distances are shorter than the M-B distances in the alkali metal BArF salts, indicating stronger interactions between the cationic nitrogen and the anionic boron than those between the boron and the alkali metal centres. Finally, a study of the structures of alkali metal hydrated and THF-solvated BArF salts showed that the interactions between the metal centre and the surrounding atoms depend not only on the size of the alkali metal centre but also on the occupancy of the first coordination sphere.

Neutral thioether and selenoether macrocyclic coordination to Group 1 cations (Li-Cs)-synthesis, spectroscopic and structural properties

The complexes [M(L)][BArF] (BArF = tetrakis{3,5-bis(trifluoromethyl)-phenyl}borate), L = [18]aneO4S2 (1,4,10,13-tetraoxa-7,16-dithiacyclooctadecane): M = Li-Cs; L = [18]aneO2S4 (1,10-dioxa-4,7,13,16-tetrathiacyclooctadecane): M = Li, Na, K; L = [18]aneO4Se2 (1,4,10,13-tetraoxa-7,16-diselenacyclooctadecane): M = Na, K, as well as [Na(18-crown-6)][BArF], are obtained in good yield as crystalline solids by reaction of M[BArF] with the appropriate macrocycle in dry CH2Cl2. X-ray crystallographic analyses of [Li([18]aneO4S2)][BArF] and [Li([18]aneO2S4)][BArF] show discrete distorted octahedral cations with hexadentate coordination to the macrocycle. The heavier alkali metal complexes all contain hexadentate coordination of the heterocrown, supplemented by M...F interactions via the anions, producing extended structures with higher coordination numbers; Na: CN = 7 or 8; K: CN = 8; Rb: CN = 9; Cs: CN = 8 or 10. Notably, all of the structures exhibit significant M-S/Se coordination. The crystal structures of the potassium and rubidium complexes show two distinct [M(heterocrown)]+ cations, one with M...F interactions to two mutually cis [BArF]- anions, and the other with mutually trans [BArF]- anions, giving 1D chain polymers. Solution multinuclear (1H, 13C, 7Li, 23Na, 133Cs) NMR data show that the macrocyclic coordination is retained in CH2Cl2 solution.