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Synthesis and reactivity of some diselenasila cycles containing an annelated dicarba‐closo‐dodecaborane(12) unit

Title data

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. Vol. 24 (January 2010) Issue 1 . - pp. 25-32.
ISSN 1099-0739
DOI: https://doi.org/10.1002/aoc.1582

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: carborane dianions; selenium; silanes; disilianes; NMR; X-ray
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry I
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 26 Mar 2018 07:06
Last Modified: 26 Mar 2018 07:06
URI: https://eref.uni-bayreuth.de/id/eprint/10455