Reactions of alkaline earth metal or al slurries with bis-cyclopentadienyl complexes of some early transition metals
| Autor: | W.E. Lindsell, R.A. Parr |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Alkaline earth metal
Inorganic chemistry Chromocene Toluene Inorganic Chemistry Metal chemistry.chemical_compound chemistry Transition metal Cyclopentadienyl complex visual_art Materials Chemistry visual_art.visual_art_medium Physical and Theoretical Chemistry Metallocene Tetrahydrofuran Nuclear chemistry |
| Zdroj: | Polyhedron. 5:1259-1265 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/s0277-5387(00)83469-5 |
| Popis: | Slurries of Mg, Ca, Ba and Al, prepared by cocondensation of metal vapour with volatile organic solvents, especially toluene, at –196°C, reacted at ambient temperature with some bis-cyclopentadienyl complexes of Ti, Zr, Hf, V and Cr. [TiCl 2 Cp 2 ] (Cp = η 5 -C 5 H 5 ) with slurries Al in hexane or toluene, or Mg or Ba, in toluene, formed [TiClCp 2 ] 2 accompanied by side-products. From related reactions with slurries of Mg in tetrahydrofuran (THF), [TiCl 2 Cp(THF)] was obtained and with Ca-toluene slurries an unstable paramagnetic dihydrido complex of Ti(III) was observed by using ESR spectroscopy. Reactions of [TiPh 2 Cp 2 with slurries of Al or Ba in toluene yielded a form of “titanocene” (TiC 10 H 10 ) and ESR studies of these reactions revealed related paramagnetic species in solution. Reaction of slurries of Al, Mg or Ba with [TiMe 2 Cp 2 ] produced several different paramagnetic products which were studied by ESR spectroscopy, and the reaction of metal slurries with the complexes [MR 2 Cp 2 ] (M = Ti, R = OPh; M = Zr or Hf, R = Cl or Me), [VRCp 2 ] (R = Cl or Me), and [CrCp 2 ] are also reported. |
| Databáze: | OpenAIRE |
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