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Wrackmeyer, Bernd ; Klimkina, Elena V. ; Milius, Wolfgang:
Synthesis and reactivity of some diselenasila cycles containing an annelated dicarba‐closo‐dodecaborane(12) unit.
In: Applied Organometallic Chemistry.
Bd. 24
(2010)
Heft 1
.
- S. 25-32.
ISSN 1099-0739
DOI: https://doi.org/10.1002/aoc.1582
Abstract
The use of 1,2-diselenolato-1,2-dicarba-closo-dodecaborane(12) dianions [1,2-(1,2-C2B10H10)Se2]2− prepared in situ as the dilithium salt may lead to irreproducible results. This is shown by the straightforward synthesis of silanes using the purified and isolated dianions, in contrast with previous less successful attempts. Thus, the reactions of the dianions with dichlorosilanes afford the five-membered diselenasila cycles containing the SiMe2 or the SiPh2 units, and with 1,2-dichloro-tetramethyldisilane the six-membered cycle containing the Si2Me4 unit. The latter was studied by X-ray diffraction, and all products were characterized by multinuclear magnetic resonance (1H, 13C, 29Si, 77Se NMR) in solution. Novel isotope effects were detected in 13C and 77Se NMR spectra. Exchange reactions of the five- and six-membered diselanasila cycles with chlorosilanes were studied.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | carborane dianions; selenium; silanes; disilianes; NMR; X-ray |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Anorganische Chemie I Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 26 Mär 2018 07:06 |
| Letzte Änderung: | 06 Nov 2023 13:54 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/10455 |