Catalytic dehydrogenation of cyclooctane with titanium, zirconium and hafnium metallocene complexes

Taubmann, Sandra; Denner, Christine E.; Alt, Helmut G.

doi:10.1016/j.jorganchem.2009.01.048

Cited by 5 publications

(2 citation statements)

References 41 publications

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“…Surprisingly, when 4 Lu -py Ph was obtained from 1 Lu -CH 2 Ar in the presence of AlMe 3 , the yield was 72%. Methylaluminoxane and trialkyl aluminum complexes have been reported to act as co-catalysts in the dehydrogenation of cyclooctane by group 4 metal compounds . This report highlights that the dehydrogenation reactions occur in the absence of a hydrogen acceptor; those results suggested to us that the co-catalyst may fulfill its function, as observed with the formation of 4 Lu -py Ph in the presence of AlMe 3 .…”

Section: Resultssupporting

confidence: 56%

Group 3 Metal Complexes of Radical-Anionic 2,2′-Bipyridyl Ligands

et al. 2010

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A new method for generating group 3 metal complexes containing radical-anionic 2,2'-bipyridyl (bipy) ligands is described that relies on hydrogen-atom abstraction from dearomatized biheterocyclic complexes. This method does not involve electron transfer to neutral 2,2'-bipyridyl or salt metathesis between the lithium salt of the 2,2'-bipyridyl radical anion and group 3 metal halides. The new metal complexes were characterized by single-crystal X-ray diffraction, electron paramagnetic resonance, and absorption spectroscopy. Density functional theory (DFT) calculations were used to probe the electronic structure of these compounds. All these methods support the radical-anionic character of bipy in all bipy compounds presented.

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Section: Resultssupporting

confidence: 56%

Group 3 Metal Complexes of Radical-Anionic 2,2′-Bipyridyl Ligands

et al. 2010

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“…These compounds have been extensively studied in the field of organometallic chemistry, 13 and in particular, in the applications as homogeneous catalysts in various organic syntheses. [14][15][16][17] As there are also demands for slurry or gasphase processes on metallocene catalysis reactions in industry, it becomes highly desirable to develop heterogeneous metallocene catalysts with methodologies that can be practically scaled up for industry processes. A few attempts have been reported by the immobilization of functionalized metallocene catalysts on various substrates.…”

Section: Introductionmentioning

confidence: 99%

π–π Interaction intercalation of layered carbon materials with metallocene

Gao

Zhang

et al. 2011

Dalton Trans.

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A new hybrid material consisting of ferrocene and layered carbon (LC: graphene oxide (GO) or reduced graphene oxide (RGO)) was prepared through a facile intercalation approach. The structure of ferrocene was well maintained while the strong π-π interaction between LC and ferrocene remarkably suppressed the sublimation of ferrocene and promoted ferrocene to decompose into iron nanoparticles in between layers of LC. The hybrid exhibited excellent electrochemical properties in electrocatalytic oxidation of ascorbic acid (AA).

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