61663-64-7

Basic information

• Product Name: chlorodihydridobis(phenyldi-t-butylphosphine)iridium(III)
• CAS NO: 61663-64-7
• Molecular Weight: 674.31
• Mol File: 61663-64-7.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: chlorodihydridobis(phenyldi-t-butylphosphine)iridium(III)(CAS DataBase Reference)
• NIST Chemistry Reference: chlorodihydridobis(phenyldi-t-butylphosphine)iridium(III)(61663-64-7)
• EPA Substance Registry System: chlorodihydridobis(phenyldi-t-butylphosphine)iridium(III)(61663-64-7)

Safety Data

• Hazardous Substances Data: 61663-64-7(Hazardous Substances Data)

Upstream product

• 6002-34-2 tert-butyldiphenylphosphine 
• 61663-67-0 pentahydridobis(phenyldi-t-butylphosphine)iridium(V) 
• 185250-10-6 Ir(H)2F(P(t)Bu₂Ph)2 
• 865-49-6 chloroform-d1 
• 204756-52-5 Ir(H)2(NCS)(P(C(CH₃)3)2C₆H₅)2 
• 32673-25-9 di(tertbutyl)phenylphosphine 
• 61663-66-9 IrH₂I(P(C(CH₃)3)2(C₆H₅))2 
• 133909-57-6 {IrH₂Cl(PMetBu₂)2} 

Downstream Products

• 61663-67-0 pentahydridobis(phenyldi-t-butylphosphine)iridium(V) 
• 185250-10-6 Ir(H)2F(P(t)Bu₂Ph)2 
• 195607-97-7 Ir(H)2(OTf)(P(t)Bu₂Ph)2 
• 61663-65-8 Ir(H)2Cl(CO)(P(C(CH₃)3)2C₆H₅)2 
• 219800-83-6 [Ir(H)2[P(C₆H₅)(C₄H₉)2]2]⁽¹⁺⁾*[B((CF₃)2C₆H₃)4]^(1-)=[Ir(H)2[P(C₆H₅)(C₄H₉)2]2][B((CF₃)2C₆H₃)4] 
• 186983-13-1 Ir(H)(η(2)-CH2CMe2P(t)BuPh)(F)(P(t)Bu2Ph) 
• 186898-18-0 IrH(η(2)-C6H4P(t)Bu2)(F)(P(t)Bu2Ph) 
• 189076-24-2 Ir(H)2(CCC₆H₅)(P(C(CH₃)3)2C₆H₅)2 
• 153372-38-4 Ir(H)2(OC₆H₅)(P(C(CH₃)3)2C₆H₅)2 
• 204756-49-0 Ir(H)2(NHC(O)CH₃)(P(C(CH₃)3)2C₆H₅)2 
• 61663-66-9 IrH₂I(P(C(CH₃)3)2(C₆H₅))2 
• 61663-66-9 dihydridoiodobis(phenyldi-t-butylphosphine)iridium(III) 
• 149613-53-6 Ir(H)2(OCH₂CF₃)(P(C(CH₃)3)2C₆H₅)2 
• 69546-72-1 carbonylchlorohydridobis(methyldi-t-butylphosphine)ruthenium(II) 

Relevant articles and documents

Silyl reagents (Me3Si-X) efficiently transfer X to Ir(H)2F(PtBu2Ph)2

Me3Si-X reagents react to completion at 25°C in a short time to convert Ir(H)2FL2 (L = PtBu2Ph) to Ir(H)2XL2. This involves formation of Ir-O, Ir-N, Ir-I, Ir-S and Ir-C(sp) bonds. Products include some η2-X ligands such as carboxylate and acetamide, NHC(O)CH3. The acetamide is shown to be η2 in the solid state and in solution, but readily rearranges, by a transition state with Ir-O bond cleavage, to effect site exchange of the two inequivalent hydrides. The same synthetic approach succeeds for the more crowded metallated species and these reactions are shown to fail when F is replaced by Cl in the iridium reagent. Unsaturation at Ir is suggested to be central to the mechanism of these F/X transposition reactions.

Ligand redistribution reactions of five-coordinate d6 species: RuHX(CO)P2, IrH2XP2, and Cp*RuXP

For the species RuHXP2(CO), IrH2XP2, and Cp*RuXP (P = bulky phosphine, X = halide or pseudohalide), both homometallic halide exchange ([M]XP + [M]YP′ ? [M]YP + [M]XP′) and heterometallic halide exchange ([M]X + [M]′Y ? [M]Y + [M]′X) are found to be quite rapid. In addition, hydride exchange occurs for RuHCl(CO)P2 and RuDCl(CO)P′2, as well as for IrH2Cl(PtBu2Ph)2 and IrD2Cl(PtBu2Me)2. Exchange is generally faster for halides than for hydrides yet is much slower for the groups phenoxide, OSiPh3, and C2Ph. These equilibria favor the better donating halide being bonded to the less electron-rich metal center. A variable-temperature 1H NMR study of the degenerate exchange Cp*Ru(PtBu2Me)Cl + Cp*Ru′(PtBu2Me)Br ? Cp*Ru(PtBu2Me)Br + Cp*Ru′(PtBu2Me)Cl establishes a second-order rate law with ΔH≠ = 8.6 ± 0.8 kcal/mol and ΔS≠ = -20 ± 3 cal/(mol K). These results clearly indicate the transient existence in solution of halide- and/or hydride-bridged dimers of monomeric metal complexes.