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Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate

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Benzene, 1,3-bis(trifluoromethyl)-, boron complex, NaBARF, Tetrakis[3,5-bis(trifluoromethyl)phenyl]boron sodium
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:



reaction suitability

core: sodium
reagent type: catalyst

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reaction suitability

core: sodium, reagent type: catalyst

reaction suitability


reaction suitability

core: boron, reagent type: catalyst

reaction suitability


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General description

Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate, also known as NaBArF, is widely used as a catalyst in the cyclopolymerization of functionalized trienes. NaBArF also acts as a precursor to synthesize other tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (TFPB)-based reagents.Sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate, also known as NaBAr′4, is a stable and highly soluble compound that has been used as a source of the [BArF] counterion in chemical synthesis. It has been found to be resistant to degradation by various oxidants and highly lipophilic. This compound has been used as a convenient reagent for the generation and stabilization of cationic electrophilic metal alkyl complexes. It has also been used in the living polymerization of ethylene, oligomerization of α-olefins, and olefin hydrogenation and hydrosilylation.


The TFPB anion can be used to catalyze:

  • In-situ diazo-coupling and N- and C-nitrosations.
  • Synthesis of oxirane from different carbonyl substrates and trimethylsulfonium chloride via phase-transfer catalysis.
  • Synthesis of ion selective membranes9

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Synthesis and Structure of the Thallium (I) Salt of the Tetrakis {3, 5-bis (trifluoromethyl) phenyl} borate Anion.
Hughes R P, et al.
Inorganic Chemistry, 36(8), 1726-1727 (1997)
Double cyclopolymerization of functionalized trienes catalyzed by palladium complexes
Motokuni K, et al.
Macromolecules, 44, 751-756 (2011)
Enantioselective hydrogenation of acyclic aromatic N-aryl imines catalyzed by an iridium complex of (S, S)-1, 2-bis (tert-butylmethylphosphino) ethane.
Imamoto T, et al.
Organic Letters, 8(11), 2289-2292 (2006)
Anion-catalyzed Phase-transfer Catalysis. II. Effects of Anionic Tetrakis [3, 5-bis (trifluoromethyl) phenyl] borate Catalyst in Phase-transfer-catalyzed Sulfonium Ylide Formation.
Shiraki Y, et al.
Bulletin of the Chemical Society of Japan, 58(10), 3041-3042 (1985)
Trityl tetrakis [3, 5-bis (trifluoromethyl) phenyl] borate: a new hydride abstraction reagent.
Bahr S R and Boudjouk P
The Journal of Organic Chemistry, 57(20), 5545-5547 (1992)

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