Chromocene, ferrocene, cobaltocene, and nickelocene derivatives with isopropyl and methyl or trimethylsilyl substituents
Bauer H, Weismann J, Saurenz D, Färber C, Schär M, Gidt W, Schädlich I, Wolmershäuser G, Sun Y, Harder S, Sitzmann H (2016)
Publication Status: Published
Publication Type: Journal article
Publication year: 2016
Journal
Publisher: Elsevier
Book Volume: 809
Pages Range: 63-73
DOI: 10.1016/j.jorganchem.2016.02.038
Abstract
From sodium 2,3-diisopropyl-1,4-dimethyl-cyclopentadienide and MBr2(dme) (M = Fe, Co, Ni) the corresponding ferrocene (1), cobaltocene (2) and nickelocene (3) could be obtained as pure, crystalline solids. From an analogous reaction of sodium 2,3,5-triisopropyl-1,4-dimethyl-cyclopentadienide with FeCl2, only the mixed-substituted ferrocene (Cp-3(2))(Cp-2(2))Fe (4) could be crystallized (Cp-3(2) = 2,3,5-triisopropyl-1,4-dimethyl-cyclopentadienyl, Cp-2(2) = 2,3-diisopropyl-1,4-dimethyl-cyclopentadienyl). The trimethylsilyl substituted ferrocene (5) and nickelocene (6) were synthesized from the corresponding metal halides and potassium 2,3-diisopropyl-1,4-dimethyl-5-trimethylsilyl-cyclopentadienide as well as a series of chromocenes with silylated or alkylated cyclopentadienyl ligands (7-10) from chromium(II) acetate. Octaisopropylnickelocene (11) has been obtained and converted to octaisopropylnickelocenium hexafluorophosphate (12). 1,2,3,4-tetraisopropylnickelocenium tetrabromoaluminate (13) was obtained from tetraisopropylcyclopentadienylnickel(II) tetrabromoaluminate and nickelocene. Crystal structures have been obtained for metallocenes 1-5, 7-9, and 11. (C) 2016 Elsevier B.V. All rights reserved.
Authors with CRIS profile
Heiko Bauer
Lehrstuhl für Anorganische und Metallorganische Chemie
Sjoerd Harder
Lehrstuhl für Anorganische und Metallorganische Chemie
Involved external institutions
Germany (DE)How to cite
APA:
Bauer, H., Weismann, J., Saurenz, D., Färber, C., Schär, M., Gidt, W.,... Sitzmann, H. (2016). Chromocene, ferrocene, cobaltocene, and nickelocene derivatives with isopropyl and methyl or trimethylsilyl substituents. Journal of Organometallic Chemistry, 809, 63-73. https://dx.doi.org/10.1016/j.jorganchem.2016.02.038
MLA:
Bauer, Heiko, et al. "Chromocene, ferrocene, cobaltocene, and nickelocene derivatives with isopropyl and methyl or trimethylsilyl substituents." Journal of Organometallic Chemistry 809 (2016): 63-73.
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