20516-78-3

Basic information

• Product Name: Fe(CO)4(Sb(C₆H₅)3)
• CAS NO: 20516-78-3
• Molecular Weight: 520.956
• Mol File: 20516-78-3.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: Fe(CO)4(Sb(C₆H₅)3)(CAS DataBase Reference)
• NIST Chemistry Reference: Fe(CO)4(Sb(C₆H₅)3)(20516-78-3)
• EPA Substance Registry System: Fe(CO)4(Sb(C₆H₅)3)(20516-78-3)

Safety Data

• Hazardous Substances Data: 20516-78-3(Hazardous Substances Data)

Upstream product

• 17685-52-8 triiron dodecarbonyl 
• 603-36-1 triphenylantimony 
• 30351-80-5 cis-Fe(CO)4(H)Si(C₆H₅)3 
• 13463-40-6 iron pentacarbonyl 
• 4756-75-6 triphenyl antimony oxide 
• 15321-51-4 diiron nonacarbonyl 
• 12193-57-6 tetracarbonyl(η-styrene)iron 
• 38722-52-0 η2-(1-hexene)tetracarbonyliron(0) 
• 52646-71-6 CH₂CH(C₂H₅O)Fe(CO)4 
• 12317-43-0 CH₂CH(CN)Fe(CO)4 
• 12192-44-8 CH₂CH(Cl)Fe(CO)4 
• 33479-79-7 CH₂CH(Br)Fe(CO)4 
• 12192-99-3 Fe(CO)4(η2-CH2CHCH3) 

Downstream Products

• 15388-84-8 Fe(CO)3Br₂{Sb(C₆H₅)3} 
• 80671-73-4 Fe(CO)3I₂{Sb(C₆H₅)3} 

Relevant articles and documents

Iron carbonyl complexes of triphenylphosphine, triphenylarsine, and triphenylstibine

The preparation in solution at atmospheric pressure of the compounds (C6H5)3MFe(CO)4 and ((C6H5)3M)2Fe(CO)3, where M = P, As, Sb, has been accomplished. The

Reactivity of Fe(CO)4(H)MPh3 (M = Si, Ge) and mechanism of substitution by two-electron-donor ligands: Implications for the mechanism of hydrosilylation of olefins catalyzed by Fe(CO)5

cis-Fe(CO)4(H)MPh3 (M = Si, Ge) complexes undergo carbonyl displacement with nucleophilic ligands (phosphines, phosphites) to give Fe(CO)3(H)(L)MPh3. With M = Si the geometry of these complexes depends on the nature of the solvent; in nucleophilic solvents the mer-OC-6-43 isomer is formed, while in nonnucleophilic solvents the mer-OC-6-23 isomer is obtained (the cis positions of H and Si are retained). These two isomers undergo concerted reductive elimination of silane with PPh3. The mer-OC-6-43 isomer reacts 183 ± 19 times faster than the mer-OC-6-23 isomer in toluene at 26.0°C, giving the same 16-electron intermediate; the calculated equilibrium constant for the interconversion of OC-6-43 and OC-6-23 is 823 ± 192 at 26.0°C in toluene. Owing to the strong acidity of Fe(CO)4(H)MPh3 (pKa estimated as 3CN) and of Fe(CO)3(H)(PPh3)MPh3 (pKa estimated as ≤8.94 in CH3CN), reaction with basic two-electron-donor ligands [P(alkyl)3, P(cycloalkyl)3, NR3] leads to the formation of the anionic trigonal-bipyramidal complexes [Fe(CO)4MPh3]- and [Fe(CO)3(L)MPh3]-. cis-Fe(CO)4(H)SiPh3 reacts with isoprene to give [Fe(CO)4SiPh3]2; this reaction is not observed with Fe(CO)3(H)(L)SiPh3. The versatile reactivity of these complexes sheds some light on the mechanism of hydrosilylation of olefins and conjugated dienes. Under thermal conditions previous coordination of the olefin to the metal in this reaction seems to be excluded.

Hydrido(triphenylsilyl)tetracarbonyliron derivatives with phosphine ligands

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