356793-74-3

Upstream product

• 152767-93-6 C₅(CH₃)5P(CH₃)3IrCH₃⁽¹⁺⁾*CF₃SO₃^(1-)=C₅(CH₃)5P(CH₃)3IrCH₃O₃SCF₃ 
• 74-85-1 ethene 
• 356793-64-1 [((CH₃)5C₅)IrH(P(CH₃)3)(CH₂Si(CH₃)2)]⁽¹⁺⁾*B(C₆F₅)4^(1-)=[((CH₃)5C₅)IrH(P(CH₃)3)(CH₂Si(CH₃)2)](B(C₆F₅)4) 
• 356793-67-4 [((CH₃)5C₅)Ir(P(CH₃)3)(CH₃)(Si(CH₃)2O(C₂H₅)2)]⁽¹⁺⁾*B(C₆F₅)4^(1-)=[((CH₃)5C₅)Ir(P(CH₃)3)(Si(CH₃)3(OC₄H₁₀))](B(C₆F₅)4) 

Relevant academic research and scientific papers

An observable silene/silylene rearrangement in a cationic iridium complex

The iridium complex Cp*(PMe3)Ir(Me)(SiMe2-OTf) (2) reacts with LiB(C6F5)4(Et2O)2 to form a mixture of the silene complex [Cp*(PMe3)Ir(η2-CH2SiMe2) (H)]- [B(C6F5)4] (3) and the base-stabilized silylene complex [Cp*(PMe3)Ir(Me)(SiMe2(Et2O))] [B(C6F5)4] (4). The silene complex 3 has been crystallographically characterized. Addition of pyridine to this mixture affords Cp*(PMe3)-Ir(Me)(SiMe2(L)][B(C6 F5)4] (5a, L = pyridine) in good yield, whereas addition of CO or ethylene results in clean formation of Cp*(PMe3)Ir(L)(SiMe3)][B(C6F5) 4] (8a, L = CO; 8b, L = C2H4).

Stoichiometric and catalytic behavior of cationic silyl and silylene complexes

Reactions of Ir(III) silyl and silylene complexes with a variety of unsaturated substrates were investigated. The reactivity of these complexes toward small molecules was also examined, and this led to the discovery of a nitrile carbon-carbon bond cleavage under mild conditions. Both silyl and silylene complexes of Ir(III) are precatalysts for catalytic hydrosilylation of ketones, and the mechanism of this reaction is discussed. In the course of studying the catalytic reaction mechanism, analogous new ruthenium silylene complexes of the form [Cp*(PMe3)2Ru(SiR2)] [B(C6F5)4] (Cp* = η5-C5Me5, R = iPr, SPh) were prepared. A comparison of [Cp*(PMe3)Ir(SiPh2)(H)] [B(C6F5)4] and the known Lewis acid hydrosilylation catalyst B(C6F5)3 is also made.