1179316-85-8

Basic information

• Product Name: [N(2-P(i)Pr₂-4-Me-C₆H₃)2]IrH(SiH₂Cy)
• Synonyms: [N(2-P(i)Pr₂-4-Me-C₆H₃)2]IrH(SiH₂Cy)
• CAS NO: 1179316-85-8
• Molecular Weight: 735.04
• Mol File: 1179316-85-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [N(2-P(i)Pr₂-4-Me-C₆H₃)2]IrH(SiH₂Cy)(CAS DataBase Reference)
• NIST Chemistry Reference: [N(2-P(i)Pr₂-4-Me-C₆H₃)2]IrH(SiH₂Cy)(1179316-85-8)
• EPA Substance Registry System: [N(2-P(i)Pr₂-4-Me-C₆H₃)2]IrH(SiH₂Cy)(1179316-85-8)

Safety Data

• Hazardous Substances Data: 1179316-85-8(Hazardous Substances Data)

Upstream product

• 872682-19-4 [IrH₂(bis(2-(diisopropylphosphino)-4-methylphenyl)amide)] 
• 18162-96-4 cyclohexylsilane 

Relevant articles and documents

Synthesis and structure of PNP-supported iridium silyl and silylene complexes: Catalytic hydrosilation of alkenes

Oxidative addition of bulky primary, secondary, and tertiary silanes to PNP (PNP ) [N(2-PiPr2-4-Me-C6H3) 2]-) iridium complexes (PNP)IrH2 and (PNP)Ir(COE) (11) afforded iridium silyl hydride complexes (PNP)Ir(H) (SiRR′R″) (3-8). Addition of 2 equiv of PhSiH3 or (3,5-Me2C6H3)SiH3 to (PNP)IrH 2 or 11 yielded disilyl complexes (PNP)Ir(SiH2R) 2 (R ) Ph (9), 3,5-Me2C6H3 (10)). Hydride abstraction from (PNP)Ir-(H)(SiH2R) (R = Trip (5), Dmp (6)) by [Ph3C][B(C6F5)4] afforded iridium silylene complexes [(PNP)(H)Ir=SiR(H)][B(C6F5) 4] (R ) Trip (12), Dmp (13)) exhibiting downfield 29Si NMR resonances (234 ppm (12), 226 ppm (13)) and downfield 1H NMR resonances for the Si-H group (10.76 ppm (12), 9.76 ppm (13)). Thermally stable disubstituted silylene complexes [(PNP)(H)Ir=SiPh2][A] (A = -B(C 6F5)4 (14), -CB11H 6Br6 (16)) were isolated via hydride abstraction from (PNP)Ir(H)(SiHPh2). The X-ray structure of 16 confirmed sp 2 hybridization at silicon and revealed a short Ir-Si bond of 2.210(2) A. Catalytic hydrosilation of alkenes by hydrogen-substituted silylene complexes [(PNP)(H)Ir=SiMes(H)][B(C6F5) 4] (1) and 14 exhibited anti-Markovnikov regioselectivity with an array of alkene substrates. Addition of H3SiMes to complex 1 afforded [(PNP)(SiH(Mes)(Hex))IrH(SiH2Mes)][B(C6F 5)4] (19), featuring a β-agostic interaction demonstrated by a JSiH of 102 Hz for the N-SiH hydrogen. Similarly, addition of H2SiPh2 to 16 afforded the structurally characterized Ir(V) disilyl complex [(PNP)(SiPh2)Ir(SiPh 2H)(H)2][CB11H6Br6] (20). Complex 20 was found to be catalytically active for the hydrosilation of alkenes, which is consistent with its intermediacy in the catalytic cycle.