117228-09-8

Basic information

• Product Name: (η-Cp)(CO)(COMe)Fe(P(p-CF3C6H4)3)
• CAS NO: 117228-09-8
• Molecular Weight: 658.283
• Mol File: 117228-09-8.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: (η-Cp)(CO)(COMe)Fe(P(p-CF3C6H4)3)(CAS DataBase Reference)
• NIST Chemistry Reference: (η-Cp)(CO)(COMe)Fe(P(p-CF3C6H4)3)(117228-09-8)
• EPA Substance Registry System: (η-Cp)(CO)(COMe)Fe(P(p-CF3C6H4)3)(117228-09-8)

Safety Data

• Hazardous Substances Data: 117228-09-8(Hazardous Substances Data)

Upstream product

• 13406-29-6 tris(para-trifluoromethyl)phenyl phosphine 

Relevant articles and documents

Comparison of the dynamics and thermodynamics of the redox-promoted carbonylation of (η-Cp)(CO)(L)FeMe in methylene chloride and acetonitrile. Applications of the Quantitative Analysis of Ligand Effects (QALE)

The redoz-catalyzed carbonylations of 19 complexes, (η-Cp)(CO)(L)FeMe (L = PMe3, PPhMe2, PEt3, PPh2Me, PEt2Ph, PPh2Et, P(i-Bu)3, P(p-Me2NC6H4)3, P(p-MeOC6H4)3, P(p-MeC6H4)3, PPh3, P(p-FC6H4)3, P(p-ClC6H4)3, P(p-CF3C6H4)3, PPh2Cy, PPh2-t-Bu, P(i-Pr)3, PPhCy2, PCy3), in acetonitrile have been studied by cyclic and square-wave voltammetry coupled with computer simulation methods. The mechanism appears to involve oxidation of (η-Cp)(CO)(L)FeMe and rapid formation of (η-Cp)(AN)(L)FeCOMe+ followed by rate-limiting reaction of (η-Cp)(AN)(L)FeCOMe+ with CO. Quantitative analysis of the ligand effect data shows that the second-order transformation of (η-Cp)(CO)(L)FeMe+ to (η-Cp)(AN)(L)FeCOMe+ is accelerated by poorer electron donor ligands and inhibited by the larger ligands. The first-order back-reaction of (η-Cp)(AN)(L)FeCOMe+ to (η-Cp)(CO)(L)FeMe+, in contrast, is relatively insensitive to the electron-donor capacity and the size of L. The second-order reaction between (η-Cp)(AN)(L)FeCOMe+ and CO is accelerated by better electron-donor ligands; the steric profile is complex and shows sequential regions of no steric effects, steric acceleration, and steric inhibition. The results of the studies are compared with those obtained when methylene chloride is the solvent.

Separation of phosphorus(III) ligands into pure σ-donors and σ-donor/π-acceptors: Comparison of basicity and σ-donicity

The separation of phosphorus(III) ligands into two distinct groups identified as pure σ-donor ligands and σ-donor/π-acceptor ligands for the acetyl and methyl complexes, (η-Cp)FeL(CO)COMe, (η-Cp′)FeL-(CO)COMe (Cp′ = MeC5H4), and (η-Cp)FeL(CO)Me, is accomplished by correlation of the terminal carbonyl stretching frequencies with the EL°′ values. The basicity (pKa value of HPR3+) is related primarily to the σ-donicity (the ability of a ligand to donate σ-electrons to a transition metal) and to a lesser degree to the size of the ligand. We conclude that pKa values are reasonable measures of the σ-donicity for those ligands that are pure σ-donor ligands; a better measure are the χ values for those ligands that are pure σ-donors for both the iron complex and LNi(CO)3.