1187326-93-7

Basic information

• Product Name: [(2,4,6-trimethylphenyl)3PH][Cl₂B(C₆F₅)2]
• Synonyms: [(2,4,6-trimethylphenyl)3PH][Cl₂B(C₆F₅)2]
• CAS NO: 1187326-93-7
• Molecular Weight: 805.374
• Mol File: 1187326-93-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [(2,4,6-trimethylphenyl)3PH][Cl₂B(C₆F₅)2](CAS DataBase Reference)
• NIST Chemistry Reference: [(2,4,6-trimethylphenyl)3PH][Cl₂B(C₆F₅)2](1187326-93-7)
• EPA Substance Registry System: [(2,4,6-trimethylphenyl)3PH][Cl₂B(C₆F₅)2](1187326-93-7)

Safety Data

• Hazardous Substances Data: 1187326-93-7(Hazardous Substances Data)

Upstream product

• 23897-15-6 tris(2,4,6-trimethylphenyl)phosphine 
• 2720-03-8 bis(pentafluorophenyl)boron chloride 
• 1333-74-0 hydrogen 

Relevant articles and documents

Metal-free hydrogen activation by the frustrated lewis pairs of ClB(C 6F5)2 and HB(C6F5) 2 and bulky lewis bases

The frustrated Lewis pair (FLP) derived from CIB(C6F 5)2 and the bulky Lewis bases 2,2,6,6tetramethylpiperidine (TMP), tri-tert-butylphosphine, and tris(2,4,6-trimethylphenyl)phosphine cleaved H2 heterolytically to form the intermediate anion [HClB(C6F5)2]-, which quickly underwent hydride/chloride exchange with the remaining CIB(C6F 5)2 to give the known compound [HB(C6F 5)2]., (n = 1 or 2) and the anion [Cl2B(C 6F5)2]- present in the products [TMPH][Cl2B(C6F5)2] (1a), [t-Bu 3PH][Cl2B(C6F5)2] (2a), and [Mes3PH][Cl2B(C6F5)2] (3a). [HB(C6F5)2]., forms Lewis adducts with TMP and t-Bu3P: TMP-BH(C6F5)2 (1b) and t-Bu3P-BH(C6F5)2 (2b). The Lewis adduct t-Bu3P-BH(C6F5)2 was found capable of generating a FLP at elevated temperature and was reacted with H 2, producing the splitting product [t-Bu3PH][H 2B(C6F5)2] (2c). Mes3P forms no Lewis adduct with [HB(C6F5)2] n, but a FLP, which was also capable of splitting H2 to yield initially [Mes3PH][H2B(C6F 5)2]. The [H2B(C6F5) 2]- anion underwent disproportionation to form [MeS 3PH][HB(C6F5)3] (3b), Mes 3P, [H2B(C6F5)]2, and H2. Similarly, 2,4,6-tri-tert-butylpyridine (TTBP) and [HB(C 6F5)2]., gave in the presence of H2 the final products [TTBPH][HB(C6F5)3] salt and [H2B(C6F5)]2. The contrasting reactivities of the t-Bu3P/[BH(C6F5) 2]n, Mes3P/[HB(C6F5)2]., and TTBP/[HB(C6F5)2]., pairs were explained on the basis of the different pKa'& of the [LBH]+ cations. After disproportionation of the [H2B(C6F 5)2]- anion to give [Mes3PH] [HB(C6F5)3] (3b) or [TTBPH][HB(C 6F5)3] (4a), the also formed [H 3B(C6F5)]- anion reacted with the more acidic cations ([MeS3PH]+, [TTBPH]+) to give H2 and syn- and anti-[H2B(C6F 5)]2 (3c). 1a, 2a, 3a, and 4a were studied by single-crystal X-ray diffraction analysis.