901741

Bis(triphenyl-λ5-phosphanylidene)ammonium hydrogendifluoride

• Synonym(s): Bifluoride salt SuFEx catalyst, PNP⁺[FHF]^-, Triphenyl((triphenyl-phosphaneylidene)amino)phosphonium fluoride hydrofluoride, [Ph3P=N-PPh₃]⁺[HF2]^-
• Empirical Formula (Hill Notation): C₃₆H₃₁F₂NP₂
• CAS Number: 2055837-32-4
• Molecular Weight: 577.58
• UNSPSC Code: 12352101

Properties

• assay: ≥95%
• form: solid
• reaction suitability: reagent type: catalyst
• greener alternative product characteristics: Catalysis; Learn more about the Principles of Green Chemistry.
• greener alternative category: Aligned,
• storage temp.: 2-8°C

Description

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for catalytic efficiency. Click here for more information.

Application

Bifluoride salt reported by K. Barry Sharpless and colleagues as a catalyst for sulfur(VI) fluoride exchange (SuFEx)-based AA-BB polycondensation reactions to prepare polysulfonates with diverse structures, narrow polydispersity, and excellent thermal and hydrolytic stability. Bisalkylsulfonyl fluorides, the AA monomers, were prepared from ethenesulfonyl fluoride (746959) and amines/anilines while bisphenol bis(t-butyldimethylsilyl) ethers, the BB monomers, were synthesized using tert-butyldimethylsilyl chloride (190500) and bisphenols. Varying the amines, anilines, and bisphenols results in assorted polymeric backbones, including those bearing orthogonal side chains for modification post-polymerization (e.g. by CuAAC). Reaction is amenable to scale up.

Other Notes

1.SuFEx-Based Polysulfonate Formation from Ethenesulfonyl Fluoride–Amine Adducts

2.Bifluoride-catalysed sulfur(vi) fluoride exchange reaction for the synthesis of polysulfates and polysulfonates

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 3
• flash_point_c: Not applicable