Reactions of N-heterocyclic ligands with substitutionally labile organometallic complexes, [(η5-C5R5)Fe(CO)2E]BF4

M’thiruaine, Cyprian M.; Friedrich, Holger B.; Changamu, Evans O.; Bala, Muhammad D.

doi:10.1016/j.ica.2012.04.003

Cited by 8 publications

(1 citation statement)

References 68 publications

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“…The title compound was prepared according to a reported procedure (M'thiruaine, Friedrich, Changamu & Bala, 2012) and crystals were grown by layering a concentrated solution of the compound in acetone with Et 2 O and the mixture kept undisturbed in the dark for four weeks.…”

Section: S2 Experimentalmentioning

confidence: 99%

Dicarbonyl(η⁵-cyclopentadienyl)(hexamethylenetetramine-κN¹)iron(II) tetrafluoridoborate

2012

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In the structure of the title compound, [Fe(C5H5)(C6H12N4)(CO)2]BF4, the arrangement around the FeII atom corresponds to that of a three-legged piano stool. The cyclopentadienyl ligand occupies three coordination sites of the apical position in a η5 fashion, while two CO ligands and one N atom of the hexamethylenetetramine ligand occupy the remaining coordination sites to complete a distorted octahedral geometry. The asymmetric unit consists of two sets of crystallographically independent cations and anions with the r.m.s. deviations of the overlay of non-H atoms of each pair being 0.081 and 0.120 Å, respectively. The Fe—N bond lengths are 2.0459 (15) and 2.0490 (14) Å, while the Fe—Cp(centroid) distances are 1.7257 (3) and 1.7246 (3) Å. One of the anions displays disorder, with the F atoms having occupancies of 0.58 (4) and 0.42 (4).

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Section: S2 Experimentalmentioning

confidence: 99%

Dicarbonyl(η⁵-cyclopentadienyl)(hexamethylenetetramine-κN¹)iron(II) tetrafluoridoborate

2012

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Multisite Amino‐Allylidene Ligands from Thermal CO Elimination in Diiron Complexes and Catalytic Activity in Hydroboration Reactions

Zappelli,

Taglieri,

Schoch

et al. 2024

ChemCatChem

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The new diiron(I) complexes [Fe2Cp2(μ‐CO){μ‐k3C,kN‐C(R1)C(R2)C(CN)NMe(R)}], 3a‐o (R = alkyl or 4‐C6H4OMe; R1 = alkyl, aryl, ferrocenyl (Fc), thiophenyl, CO2Me or SiMe3; R2 = H, Me or CO2Me) were synthesized in moderate to high yields from the thermal decarbonylation of the bis‐carbonyl precursors 2a‐o, and were structurally characterized by IR and NMR spectroscopy, and single crystal X‐ray diffraction in four cases. Electrochemical behavior of one complex was also investigated. Complexes 3a‐o comprise a highly functionalized, multisite amino‐(cyano)allylidene ligand, including metal coordination of a tertiary amine group. Selected complexes displayed negligible to moderate catalytic activity in CO2/propylene oxide coupling, working under ambient conditions. Additionally, they were investigated as catalysts for the conversion of benzaldehyde to the corresponding borate ester 6a, using pinacolborane (HBpin) as the borylating agent. Most complexes achieved good conversions at room temperature with 1% catalyst loading, and data highlight the significant influence of the multisite ligand substituents on the catalytic performance. Notably, complex 3m (featuring R = 4‐methoxyphenyl, R1 = Fc, R2 = H) displayed the highest activity and effectively catalyzed the hydroboration of various aldehydes and ketones. A plausible mechanistic cycle involves metal coordination of the carbonyl substrate, its activation being possibly facilitated by intramolecular interactions.

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Syntheses and structural characterization of 2,4,6-trimethylaniline complexes of iron carbonyls

M’thiruaine

Friedrich

Nyawade

et al. 2014

Inorganica Chimica Acta

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Reactions of N-heterocyclic ligands with substitutionally labile organometallic complexes, [(η5-C5R5)Fe(CO)2E]BF4

Cited by 8 publications

References 68 publications

Dicarbonyl(η⁵-cyclopentadienyl)(hexamethylenetetramine-κN¹)iron(II) tetrafluoridoborate

Dicarbonyl(η⁵-cyclopentadienyl)(hexamethylenetetramine-κN¹)iron(II) tetrafluoridoborate

Multisite Amino‐Allylidene Ligands from Thermal CO Elimination in Diiron Complexes and Catalytic Activity in Hydroboration Reactions

Syntheses and structural characterization of 2,4,6-trimethylaniline complexes of iron carbonyls

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Reactions of N-heterocyclic ligands with substitutionally labile organometallic complexes, [(η5-C5R5)Fe(CO)2E]BF4

Cited by 8 publications

References 68 publications

Dicarbonyl(η5-cyclopentadienyl)(hexamethylenetetramine-κN1)iron(II) tetrafluoridoborate

Dicarbonyl(η5-cyclopentadienyl)(hexamethylenetetramine-κN1)iron(II) tetrafluoridoborate

Multisite Amino‐Allylidene Ligands from Thermal CO Elimination in Diiron Complexes and Catalytic Activity in Hydroboration Reactions

Syntheses and structural characterization of 2,4,6-trimethylaniline complexes of iron carbonyls

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Product

Resources

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Dicarbonyl(η⁵-cyclopentadienyl)(hexamethylenetetramine-κN¹)iron(II) tetrafluoridoborate

Dicarbonyl(η⁵-cyclopentadienyl)(hexamethylenetetramine-κN¹)iron(II) tetrafluoridoborate