Browsing by Author "Walter, Simone"

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Lithium-bis(di-tert-butylfluorsilyl)amid als Kontaktionenpaar mit linearer Si-N--Si-Einheit und als Ionenpaar ohne Li+-Anion-Kontakt
(1990)
Pieper, Ursula
;
Walter, Simone
;
Klingebiel, Uwe
;
Stalke, Dietmar
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Vom Lithium-Derivat des Aminodi-tert-butylfluorsilans zu Cyclodi-, -tri- und -tetrasilazanen
(1991)
Kottke, Thomas
;
Klingebiel, Uwe
;
Noltemeyer, Mathias
;
Pieper, Ursula
;
Walter, Simone
;
Stalke, Dietmar
Aminodi-tert-butylfluorosilane (CMe3)2 SiFNH2 reacts with BuLi in hexane to give the lithium derivative 1, which crystallizes from TMEDA with formation of the dimer 2 [(CMe3)2SiFNHLi(TMEDA)]2. LiF elimination from 1 or 2 leads to cyclodi- (3), -tri- (4), and -tetrasilazane (6). 3 is the main product of the LiF elimination from 2 and 4 the main product resulting from 1. Cyclotetrasilazane 6 is the most planar eightmembered Si-N ring known so far. Chain compound 5 is the direct precursor of 4. The crystal structures of 2, 5, and 6 are described.