Dicyclopentadienyldi-tert-butoxydichromium. Preparation, properties, structure, and reactions with small unsaturated molecules

Chisholm, M. H.; Cotton, F. Albert; Extine, M. W.; Rideout, Darryl

doi:10.1021/ic50191a026

Cited by 64 publications

(21 citation statements)

References 4 publications

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“…Compound (1) has a roughly planar central core of two lithium (three-co-ordinate) and two oxygen atoms, The structure differs from the previously reported compound, [ {Li(OC6H,Me-4,But,-2,6)(OEt,) >2],s in that the ligated thf oxygen atoms and the CBut3 groups deviate from the central core plane on opposite sides. The Li-0 distances in (1) are quite short, 1.835( lo), 1.852 (9), 1.846(1 l), and 1.830(12) A, similar to the values of 1.849 (11) and 1.867 (10) 8, in the aryloxo compound above.6…”

supporting

confidence: 62%

Syntheses and X-ray crystal structures of lithium and chromium(II) complexes of the tri-t-butylmethoxide ligand

Hvoslef¹,

Hope²,

Murray³

et al. 1983

J. Chem. Soc., Chem. Commun.

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supporting

confidence: 62%

Syntheses and X-ray crystal structures of lithium and chromium(II) complexes of the tri-t-butylmethoxide ligand

Hvoslef¹,

Hope²,

Murray³

et al. 1983

J. Chem. Soc., Chem. Commun.

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“…They are similarly assigned to norbornyl groups on silanol and siloxane silicons, respectively, on the basis of their relative intensities. The multiplet at 6 31.5 pprn is thus tentatively assigned to C (6) carbons. An alternative interpretation is that the two sets of I3C NMR resonances derive from endo and exo conformations of the Si/O framework relative to the norbornyl groups.…”

Section: Resultsmentioning

confidence: 96%

The synthesis and characterization of norbornylsilasesquioxanes

Hambley¹,

Maschmeyer²,

Masters³

1992

Applied Organom Chemis

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“…The alkoxide is more basic and better electron donor, which provides for shorter Cr-O bonds (193-198 pm [23] vs. 200-202 pm for phenolate 7). 368.2 pm for the tBu group connected to C4.…”

Section: Ch 3 ] (M = Mo W)mentioning

confidence: 99%

Chromium(III) and Chromium(II) Phenolate Complexes with Bulky Alkylcyclopentadienyl Ligands

et al. 2019

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The chromium(II) tricarbonyl methyl complex [Cp′′′Cr(CO) 3 CH 3 ] (1, Cp′′′ = η 5 -C 5 H 2 tBu 3 -1,2,4) was obtained from chromium hexacarbonyl, NaCp′′′, and methyl iodide. 1 was found to establish an equilibrium with the dicarbonyl acetyl isomer [Cp′′′Cr(CO) 2 (COCH 3 )] in solution via reversible, slightly endothermic methyl migration from chromium to a carbonyl ligand with ΔH ca. 3.6 kJ/mol and E a ca. 49.5 kJ/mol. Phosphorus pentachloride oxidized 1 to the green, dinuclear tetrachloro complex [Cp′′′CrCl(μ-Cl)] 2 (2), which was crystallized as the blue-green chromium(III) half sandwich complex [Cp′′′CrCl 2 -(THF)] (3) in the presence of tetrahydrofuran vapor. Attempted sublimation of the known chromium(II) iodo complex [ 4 CpCr-(μ-I)] 2 resulted in a redox reaction with formation of the chromium(III) iodo dimer [ 4 CpCrI(μ-I)] 2 , whose tri(tert-butyl)-[a] FB Chemie der TU Kaiserslautern

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Dicyclopentadienyldi-tert-butoxydichromium. Preparation, properties, structure, and reactions with small unsaturated molecules

Cited by 64 publications

References 4 publications

Syntheses and X-ray crystal structures of lithium and chromium(II) complexes of the tri-t-butylmethoxide ligand

Syntheses and X-ray crystal structures of lithium and chromium(II) complexes of the tri-t-butylmethoxide ligand

The synthesis and characterization of norbornylsilasesquioxanes

Chromium(III) and Chromium(II) Phenolate Complexes with Bulky Alkylcyclopentadienyl Ligands

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