Mono(2,2',2"-terpyridine) complexes of iron(II)

Reiff, W. M.; Erickson, N. E.; Baker, W. A.

doi:10.1021/ic50079a046

Cited by 35 publications

(24 citation statements)

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“…2). The observed isomer shift value, ␦ 0.48 mm s −1 , is in good agreement with the values reported previously (from −0.2 to +0.4 mm s −1 ) for low-spin iron(II) complexes [15,16]. Hence, the Mössbauer spectral datum supports the trigonalbipyramidal structure of the complex.…”

Section: Mössbauer Spectrasupporting

confidence: 91%

Manganese(II) and iron(II) derivatives of tris{(diphenylphosphino)dimethylsilyl}methane: Synthesis and properties

Gupta

Kelkar

2006

Heteroatom Chemistry

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Section: Mössbauer Spectrasupporting

confidence: 91%

Manganese(II) and iron(II) derivatives of tris{(diphenylphosphino)dimethylsilyl}methane: Synthesis and properties

Gupta

Kelkar

2006

Heteroatom Chemistry

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“…The fact that this complex shows activity at all is quite surprising as the corresponding iron(II) complex is inactive [57,[59][60][61]. It has been argued [55] that the lack of activity of the iron complex can be attributed to the formation of a salt of the following formula [Fe(ligand) 2 ][FeCl 4 ] [62][63][64] or the formation of a dimeric species. The dimer explanation seems unlikely as the corresponding CoCl 2 complex is monomeric [65].…”

Section: Steric and Electronic Effects On Catalyst Activitymentioning

confidence: 99%

N,N,N-Tridentate iron(II) and vanadium(III) complexes

Schmidt

Welch

Knudsen

et al. 2004

Journal of Molecular Catalysis A: Chemical

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A series of N,N,N-tridentate vanadium(III) complexes were tested after activation with methyl aluminoxane (MAO) for ethene oligomerization and polymerization. Variations in the catalyst structure as well as the influence of physical parameters were investigated and the properties of the obtained oligomeric products were determined. Methods of altering the Schulz-Flory distribution of the oligomeric products were investigated. The product properties of the polymers and oligomers obtained with the vanadium(III) complexes and the structurally identical iron(II) complexes were compared. Depending on their substitution pattern, the N,N,N-tridentate vanadium(III) catalysts exhibit high productivities and selectivities towards ␣-olefin oligomerization products under mild conditions when activated with MAO whereas the corresponding iron complexes produce higher molecular weight materials. The synthesis of these new vanadium(III)-and iron(II)-diiminepyridyl complexes was reported earlier.

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“…In this context, it should be mentioned that the reaction of FeCl 2 and terpyridine (terpy) can give [Fe(terpy) 2 ][FeCl 4 ] in the solid state 9–11. It is likely that the unsubstituted di(imino)pyridine complex in combination with MAO is inactive in ethylene polymerization because of an analogous composition.…”

Section: Introductionmentioning

confidence: 99%

Iron(II)‐based catalysts for ethene oligomerization

Schmidt

Hammon

Gottfried

et al. 2003

J of Applied Polymer Sci

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ABSTRACT:The synthesis of iron(II) complexes with various tridentate di(imino)pyridine ligands and their potential as ethene oligomerization catalysts are described. The ligands are characterized by 1 H-and 13 C-NMR spectroscopy and the complexes only by mass spectrometry due to their paramagnetism. After activation either with methylalumoxane (MAO) or with a heterogeneous cocatalyst consisting of partially hydrolyzed trimethylaluminum and silica gel, the prepared complexes proved to be good catalysts for the oligomerization of ethene. 1-Octene, 1-hexene, and 1-decene were the major products, formed in very high isomeric purity (99.9 %).

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Mono(2,2',2"-terpyridine) complexes of iron(II)

Cited by 35 publications

References 0 publications

Manganese(II) and iron(II) derivatives of tris{(diphenylphosphino)dimethylsilyl}methane: Synthesis and properties

Manganese(II) and iron(II) derivatives of tris{(diphenylphosphino)dimethylsilyl}methane: Synthesis and properties

N,N,N-Tridentate iron(II) and vanadium(III) complexes

Iron(II)‐based catalysts for ethene oligomerization

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