Chromocene, ferrocene, cobaltocene, and nickelocene derivatives with isopropyl and methyl or trimethylsilyl substituents
| Autor: | Yu Sun, Marion Schär, Gotthelf Wolmershäuser, Christian Färber, Wjatscheslaw Gidt, Ina Schädlich, Dirk Saurenz, Julia Weismann, Sjoerd Harder, Heiko Bauer, Helmut Sitzmann |
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| Rok vydání: | 2016 |
| Předmět: |
Trimethylsilyl
010405 organic chemistry Organic Chemistry Nickelocene Inorganic chemistry Chromocene 010402 general chemistry 01 natural sciences Biochemistry Medicinal chemistry 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Ferrocene chemistry Cyclopentadienyl complex Hexafluorophosphate Cobaltocene Materials Chemistry Physical and Theoretical Chemistry Isopropyl |
| Zdroj: | Journal of Organometallic Chemistry. 809:63-73 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/j.jorganchem.2016.02.038 |
| Popis: | 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 ( C 2 3 p )( C 2 2 p )Fe (4) could be crystallized ( C 2 3 p = 2,3,5-triisopropyl-1,4-dimethyl-cyclopentadienyl, C 2 2 p = 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. |
| Databáze: | OpenAIRE |
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