2317-39-7

Upstream product

• 1109-15-5 tris(pentafluorophenyl)borate 
• 603-35-0 triphenylphosphine 
• 827319-45-9 phenyl(triphenylphosphine)[diphenylbis((trimethylsilyl)imino)phosphorato]nickel 
• 1176202-73-5 Si((CH₂)11CH₃)2(C₄HSC₆H₃N₂S)2(B(C₆F₅)3)2 
• 107-03-9 1-thiopropane 
• 16343-18-3 1,1,2,2-tetraphenyldisilane 
• 930301-81-8 [tBu₃Ph][HB(C₆F₅)3] 

Downstream Products

• 1015484-43-1 Ph₃P(C₆F₄)BF(C₆F₅)2 
• 1163275-08-8 E-Ph₃P(Ph)C=C(H)B(C₆F₅)3 

Relevant academic research and scientific papers

1,2-Diphosphonium Dication: A Strong P-Based Lewis Acid in Frustrated Lewis Pair (FLP)-Activations of B-H, Si-H, C-H, and H-H Bonds

A highly Lewis acidic diphosphonium dication [(C10H6)(Ph2P)2]2+ (1), in combination with a Lewis basic phosphine, acts as a purely phosphorus-based frustrated Lewis pair (FLP) and abstracts hydride from [HB(C6F5)3]- and Et3SiH demonstrating the remarkable hydridophilicity of 1. The P-based FLP is also shown to activate H2 and C-H bonds.

Borane-catalyzed Si-H activation routes to polysilanes containing thiolato side chains

Dehydrocoupling and hydrosilation reactions of the Si-H bonds in poly(phenylsilane) catalyzed by B(C6F5)3 allow the preparation of new polymers containing both Si-H and Si-SR side chains. This postpolymerization modification takes place without any observable competing Si-Si bond cleavage, unlike other Lewis acid, transition-metal, or radical mediated routes. The -SR-functionalized polymers have been characterized by GPC, IR, UV-vis, elemental analysis, and 1H, 13C, and 29Si NMR.

Band gap control in conjugated oligomers via Lewis acids

(Graph Presented) A simple and effective strategy for optical band gap control is demonstrated through the use of a novel small acceptor/donor/acceptor molecule, 1, and group-13 Lewis acids. Chromophore 1 contains a dithienolesilole donor unit end-capped

Reactions of phosphines with electron deficient boranes

A series of classical B(C6F5)3-phosphine adducts are shown to be reactive molecules. Reaction of (THF)B(C 6F5)3 with phosphines are shown to effect ring-opening of THF affording the zwitter

Terminal alkyne activation by frustrated and classical lewis acid/phosphine pairs

(Figure Presented) Frustrated and classical Lewis pairs arising from combinations of Lewis acids and phosphines react with terminal alkynes either via C-H activation forming an alkynylborate salt or by addition to alkyne giving a zwitterionic phosphonium

Thermal rearrangement of phosphine -B(C6F5) 3 adducts

A series of tertiary and secondary phosphine-B(C6F 5)3 adducts are shown to undergo facile, thermal-induced rearrangement to give zwitterionic species of the form R3P(C 6F4)BF(C6

Facile heterolytic cleavage of dihydrogen by phosphines and boranes

The facile heterolytic cleavage of H2 is readily achieved at room temperature by the cooperative action of the Lewis acidic borane and Lewis basic phosphine, where the steric congestion precludes quenching of the acid and base via adduct formation. Copyright

Ethylene polymerization using discrete nickel(II) iminophosphonamide complexes

The syntheses and structures of the discrete (π-allyl)nickel iminophosphonamide (PN2) complexes 2a-d from the reaction of (πallyl)nickel bromide and the corresponding PN2 ligands 3a,b or from the reaction of (π-allyl)2Ni and phosphorane 1 are reported. Complexes 2a,b are characterized by having long Ni-N distances coupled with an acute bite angle for the PN2 ligand. The π-allyl ligands in complexes 2a-d are not fluxional on the NMR time scale at room temperature, although chemical exchange between the isomeric complexes 2c,d occurs via PN2 ligand reorientation. Purified complexes 2a-d are not active for ethylene polymerization; it is only when complexes 2c,d are generated in situ in the presence of monomer that high-Mw branched poly(ethylene) is formed. A variety of indirect evidence suggests that the active catalyst arises from the reaction of Ni(0)-alkene complexes with phosphorane 1, either preformed or generated in situ through decomposition of (π-allyl)2Ni. A bona fide PN2NiPh(PPh3) complex, 5, was prepared from NiPh(PPh3)2Br and the PN2 ligand 3a and was structurally characterized. This complex is active for 1 -hexene isomerization in the absence of an activator. During hexene isomerization, variable amounts of the paramagnetic bis(PN2) complex 4 are produced along with ligand 3a. In addition, the fluxional intermediate 6, containing both a PN2 ligand and coordinated PPh3, is present during catalysis. Reaction of 5 with an equimolar amount of propene provides α-methylstyrene, the product of 1,2-insertion followed by β-H elimination. Complex 5 is not effective for polymerization or oligomerization of ethylene under a variety of conditions. The reactions of complex 5 with various phosphine scavengers were studied, and of these only Rh(acac)(C2H4)2 is both effective and selective for PPh3. Hard Lewis acids, including AlMe3, B(C6F5)3, and PMAO, have a pronounced tendency toward abstraction of the PN2 or other anionic ligands in these unhindered complexes. All of the complexes reported in this paper are extremely active for ethylene dimerization in the presence of PMAO. In the presence of stoichiometric Rh(I), complex 5 rapidly isomerizes l-hexene and in the presence of ethylene produces branched PE oligomers at modest activity.

Lewis Acid Properties of Tris(pentafluorophenyl)borane. Structure and Bonding in L-B(C6F5)3 Complexes

A variety of donor adducts of tris(pentafluorophenyl)borane were experimentally generated by reaction of a Lewis base with an excess of B(C6F5)5 in pentane. In this way, nitrile complexes (C6F5)3B·NCR(R = CH3 1a, p-CH3-C6H4 1b, p-NO2-C6H4 1c), isonitrile complexes (C6F5)3B·CNR (R = C(CH3)3 3a, C(CH3)2CH2C(CH3)3 3b, 2,6-(CH3)2-C6H3 3c), and the phosphine adduct (C6F5)3B·P(C6H 5)3 (6) could be prepared. The compounds were characterized by IR and NMR spectroscopy and by X-ray structure analyses (1a, 1c, 3a, 3b, and 6). Coordination of the nitriles as well as the isonitriles to the neutral Lewis acid leads to a substantial increase in the C≡N bond strength. This is evident from a marked shift of the v?C≡N IR band to higher wavenumbers, and this interpretation is supported by the small but experimentally significant decrease of the C≡N bond length observed by X-ray diffraction. The experimental work is complemented by a density functional study on the model complexes (C6F5)3B·L, L = CNCH3, NCCH3, PH3, CO. A detailed analysis revealed that the bonding in (C6F5)3B·L complexes is mainly dominated by electrostatic interaction, which in turn is responsible for the observed structural and spectroscopic changes. In the context of this work, the bonding of the neutral B(C6F5)3 Lewis acid is compared to the positively charged organometallic d0-Cp3M+ system (M = Zr, Hf). It was found that electrostatic effects are more pronounced for B(C6Fs)3 than for the transition metal fragments. The question as to the existence of a nonclassical main group carbonyl complex, (C6F5)3B·CO, is addressed.