Untersuchungen zur reaktivität von metall-π-komplexen II. Elektronentransfer-reaktionen von dicyclopentadienylnickel und -kobalt mit triphenylmethyl-chlorid

Werner, Helmut; Mattmann, G.; Salzer, Albrecht; Winkler, Tammo

doi:10.1016/s0022-328x(00)87849-3

Cited by 40 publications

(7 citation statements)

References 30 publications

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“…For example, the reaction of (C 5 [10]. Interestingly, when the supernatant was decanted and the solvent removed under vacuum, analysis by 1 H NMR spectroscopy showed only compound 3 to be present, the spectra not being paramagnetically broadened or shifted.…”

Section: Synthesis and Characterisation Of Ethylene-bis-hexamethylindmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, structure and characterisation of rac and meso–ansa-bridged permethylindenyl cobalt complexes

Ransom¹,

Ashley²,

Thompson³

et al. 2009

Journal of Organometallic Chemistry

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Section: Synthesis and Characterisation Of Ethylene-bis-hexamethylindmentioning

confidence: 99%

“…Crystallographic data for compounds 2, rac-5 Á CH 2 Cl 2 , and meso-5 rac-2 rac-5 Á CH 2 Cl 2 meso-5 (4) 14.3869 (2) 11.1217 (2) a (°) 9 0 9 0 9 0 b (°) 123.4726 (14) 94.8344 (10) 117.5994 (10) c (°) 9 0 9 0 9 0 Cell volume (Å 3 ) 2464.37 (13) …”

mentioning

confidence: 99%

Synthesis, structure and characterisation of rac and meso–ansa-bridged permethylindenyl cobalt complexes

Ransom¹,

Ashley²,

Thompson³

et al. 2009

Journal of Organometallic Chemistry

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“…Addition of electrophiles such as H þ or Ph 3 C þ to a Cp group in nickelocene has long been known and would not be novel [17][18][19].…”

Section: Reaction Of Methoxide Ions With 1amentioning

confidence: 99%

Some reactions of Ni–Mo and Ni–W propargylic cations with nucleophiles

Chetcuti

McDonald

2004

Journal of Organometallic Chemistry

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“…(Triphenylmethyl-cyclope?ztadic~ayl) -trimethyZ-silan. Triphenylmethylcyclopentadien kann man durch Umsetzung von Dicyclopentadienylnickel Ni(C5H& mit Triphenylmethylchlorid gewinnen [6]. Man erhalt unter Gleichgewichtsbedinguiigen bei Raumtemperatur ein Isomerengemisrh von 21 yo 2und 79% 3-substituiertem Cyclopentadien ; das bei der Darstellung intermediar ent-stehende 1-Isomere lasst sich im Gleichgewichtsgemisch nicht nachweisen.…”

Section: Uber Das Fluktuierende Verhalten Von Triphenylmethylsubstituunclassified

“…(CH&SiCl, (CH3)3SnCl und n-C4HgLi waren Handelsprodukte, die ohne Reinigung eingesetzt wurden. CsHsCPhs wurde nach Literaturangaben [6] hergestellt.…”

Section: Experimenteller Teilunclassified

Über das fluktuierende Verhalten von triphenylmethylsubstituierten Cyclopentadienyl‐Metallverbindungen

Kläui

Werner

1976

Helvetica Chimica Acta

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The fluxional behaviour of triphenylmethyl substituted cyclopentadienyl metal cornpounds. -Summary. 1H-NMR. spectroscopy has been used to study the influence of the triphenylmethyl substituent on the metallotropic rearrangement in CSHQJCPI~~) Si(CH3)3 and CbH4 (CPh3) Sn(CH3)a. The most likely mechanism corresponds to a degenerate metal exchange between two neighbouring ring positions. The AA'XX' spectrum of the cyclopcntadienyl ring protons in CsH4(CPh3) Sn(CH3)3 has been analysed under rapid exchange conditions. The free energy of activation for the sigmatropic [1,5]-Sn shift has been measured by comparison with computer simulated spectra for slow exchange.Einleitung. -Die Cyclopentadienylnietallverbindungen des Siliciums, Germaniums und Zinns gehoren zu den ersten fluktuierenden metallorganischen Molekeln, die entdeckt und als solche erkannt worden sind [l]. In allen Fallen erfolgt die Umlagerung intramolekular als sigmatropische Metallverschiebung der Ordnung [1,5] entsprechend dem Schema:

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Untersuchungen zur reaktivität von metall-π-komplexen II. Elektronentransfer-reaktionen von dicyclopentadienylnickel und -kobalt mit triphenylmethyl-chlorid

Cited by 40 publications

References 30 publications

Synthesis, structure and characterisation of rac and meso–ansa-bridged permethylindenyl cobalt complexes

Synthesis, structure and characterisation of rac and meso–ansa-bridged permethylindenyl cobalt complexes

Some reactions of Ni–Mo and Ni–W propargylic cations with nucleophiles

Über das fluktuierende Verhalten von triphenylmethylsubstituierten Cyclopentadienyl‐Metallverbindungen

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