Brunner, Henri and Wachter, Joachim and Gehart, Günther and Leblanc, Jean-Claude and Moise, Claude (1996) Preparation and reactivity of peralkylated tantalocene sulfur complexes having a fulvenoid substructure. ORGANOMETALLICS, 15 (4). pp. 1327-1330. ISSN 0276-7333, 1520-6041
Full text not available from this repository.Abstract
The equilibrium mixture of Cp*(eta(6)-C(5)Me(4)-CH2)TaH2 and [Cp*2TaH] reacts with elemental sulfur to give Cp*Ta-2(eta(2)-S-2)H (1) and Cp*(eta(6)-C(5)Me(4)CH(2))Ta-(eta(2)-S-2) (2). Irradiation of 2 by sunlight in the presence of sulfur results in sulfur insertion into the Ta-methylene bond to giveCp*(eta(6)-C(5)Me(4)CH(2)S)Ta(eta(2)-S-2) (4). The same reaction in the absence of sulfur produces Cp*(eta(6)-C(5)Me(4)CH(2)S)Ta(=S) (5), in which the Ta(eta(2)-S-2) group is transformed into a Ta=S moiety accompanied by a migratory sulfur insertion into a Ta-C bond. As a byproduct in these reactions, C*Ta-2(=S)SH (3), which is an isomerization product of the always present 1, is formed. These reactions provide a new insight into the uslfur chemistry of metallocenes having a fulvenoid substructure. All products are characterized by means of IR-, H-1-, C-13-NMR spectra.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MOLECULAR-STRUCTURE; DERIVATIVES; CHEMISTRY; HYDROGEN; LIGANDS; NITROGEN; ELECTRON; TANTALUM; NIOBIUM; MODEL |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Arbeitskreis Dr. Joachim Wachter Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Henri Brunner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Nov 2023 11:10 |
| Last Modified: | 07 Nov 2023 11:10 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51925 |
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