Calimano, Elisa’s team published research in Journal of the American Chemical Society in 131 | CAS: 457-68-1

Journal of the American Chemical Society published new progress about 457-68-1. 457-68-1 belongs to catalysis-chemistry, auxiliary class Fluoride,Benzene, name is Bis(4-fluorophenyl)methane, and the molecular formula is C13H10F2, Related Products of catalysis-chemistry.

Calimano, Elisa published the artcileSynthesis and Structure of PNP-Supported Iridium Silyl and Silylene Complexes: Catalytic Hydrosilation of Alkenes, Related Products of catalysis-chemistry, the publication is Journal of the American Chemical Society (2009), 131(31), 11161-11173, database is CAplus and MEDLINE.

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 equivalent of PhSiH3 or (3,5-Me2C6H3)SiH3 to (PNP)IrH2 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(C6F5)4 (14), –CB11H6Br6 (16)) were isolated via hydride abstraction from (PNP)Ir(H)(SiHPh2). The x-ray structure of 16 confirmed sp2 hybridization at silicon and revealed a short Ir-Si bond of 2.210(2) ?. 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(C6F5)4] (19), featuring a ¦Â-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(SiPh2H)(H)2][CB11H6Br6] (20). Complex 20 was catalytically active for the hydrosilation of alkenes, which is consistent with its intermediacy in the catalytic cycle.

Journal of the American Chemical Society published new progress about 457-68-1. 457-68-1 belongs to catalysis-chemistry, auxiliary class Fluoride,Benzene, name is Bis(4-fluorophenyl)methane, and the molecular formula is C13H10F2, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia