Pentacarbonyliron

Samson, Sylvie; Stephenson, G. R.; Stambuli, James P.

doi:10.1002/047084289x.rp019.pub2

Cited by 3 publications

(1 citation statement)

References 143 publications

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“…Iron pentacarbonyl is used extensively as an intermediate to produce high purity iron, as well as a synthetic and catalytic reagent . As one of the few binary metal carbonyls, it is an intriguing model system to understand coordination and bonding in organometallic complexes that are relevant in catalytic processes .…”

Section: Introductionmentioning

confidence: 99%

From Iron Pentacarbonyl to the Iron Ion by Imaging Photoelectron Photoion Coincidence

et al. 2013

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The dissociation dynamics of internal energy selected iron pentacarbonyl cations, Fe(CO)5(+), have been investigated using the imaging photoelectron photoion coincidence (iPEPICO) spectrometer at the Swiss Light Source. The molecular ion loses all five carbonyl ligands in sequential dissociations in the 8.5-20 eV photon energy range. The Fe(CO)5(+) parent ion is metastable at the onset of the first dissociation reaction on the time scale of the experiment. The slightly asymmetric and broad daughter ion time-of-flight distributions indicate parent ion lifetimes in the microsecond range, and are used to obtain an experimental dissociation rate curve. Further carbonyl losses were found to be fast at threshold. The fractional parent and daughter ion abundances as a function of the photon energy, that is, breakdown diagram, as well as the dissociation rates for the first CO loss were modeled using the statistical Rice-Ramsperger-Kassel-Marcus (RRKM) and statistical adiabatic channel model (SSACM) theories. The excess energy redistribution in the products was also taken into account in a statistical framework. The 0 K dissociative photoionization thresholds for the five carbonyl-loss channels were found to be 9.015 ± 0.024 eV, 10.199 ± 0.027 eV, 10.949 ± 0.033 eV, 12.282 ± 0.39 eV, and 13.821 ± 0.045 eV for the processes leading to Fe(CO)4(+), Fe(CO)3(+), Fe(CO)2(+), Fe(CO)(+), and Fe(+), respectively. The iron cation thermochemistry is well-known, and these onsets connect the bare metal ion to the other fragment ions as well as to the gas phase neutral Fe(CO)5.

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Section: Introductionmentioning

confidence: 99%

From Iron Pentacarbonyl to the Iron Ion by Imaging Photoelectron Photoion Coincidence

et al. 2013

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Organo‐ and Iron(0) Catalysis for an Enantioselective Michael Addition–Hemiketalization–Fragmentation Sequence to Protected ω‐Hydroxy‐nitroketones

Quintard

Rodríguez

2016

Adv Synth Catal

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By combining an organocatalyzed Michael addition of 1,3‐diketones to hydroxy‐nitroolefins with a subsequent, innovative iron(0)‐catalyzed fragmentation, key enantioenriched ketones possessing additional nitro and protected alcohol functions could efficiently be prepared under excellent enantiocontrol (typically 95% ee). The reaction was made possible by the discovery that photochemical activation of iron pentacarbonyl [Fe(CO)5], a cheap widely available complex, efficiently catalyzed a Claisen‐type fragmentation under mild conditions, avoiding decomposition of the intermediates and products.magnified image

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1.7 Product Class 7: Organometallic Complexes of Iron

Carreira¹,

Krausé²,

Oestreich³

et al. 2014

Knowledge Updates 2014/1

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This chapter is a revision of the previous Science of Synthesis contribution describing methods for the synthesis of organometallic complexes of iron with hapticities between η6 (arene complexes) and η1 (carbene complexes and σ-bonded complexes).The main methods surveyed are the direct complexation of ligands, nucleophile addition to cationic complexes (which reduces the hapticity by one), protonation of unsaturated but non-coordinated sections of ligands or ligands bearing leaving groups (which increases the hapticity by one), and functional-group transformations of substituents on the haptyl ligand (which leaves the hapticity unchanged). Access to nonracemic complexes and the use of iron complexes in total synthesis are discussed.

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Pentacarbonyliron

Cited by 3 publications

References 143 publications

From Iron Pentacarbonyl to the Iron Ion by Imaging Photoelectron Photoion Coincidence

From Iron Pentacarbonyl to the Iron Ion by Imaging Photoelectron Photoion Coincidence

Organo‐ and Iron(0) Catalysis for an Enantioselective Michael Addition–Hemiketalization–Fragmentation Sequence to Protected ω‐Hydroxy‐nitroketones

1.7 Product Class 7: Organometallic Complexes of Iron

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