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Carbazole reacts with n-BuLi and fluorosilanes to give the lithium carbazolide (1) which crystallizes as a dimer from THF. In the reactions of 1 and difluorosilanes, F 2 SiR 2 , the carbazolylsilanes C 12 H 8 N-SiFR 2  (2 - 4 R = Me (2), i Pr (3), t-Bu (4)), are obtained. Bis(carbazolyl)silanes, (C 12 H 8 N) 2 SiFR, are formed in the reaction of 1 with trifluorosilanes, F 3 SiR, in a molar ratio of 2:1, R = t-Bu (5), Ph (6), Me (7). Using F 3 SiMe and 1 in a molar ratio of 1:3 the tris(carbazolyl)silane (C 12 H 8 N) 3 SiMe (8) is isolated. The carbazolylfluorosilane 3 reacts with n-BuLi to give 1 and n-butyldiisopropylfluorosilane, or with lithium pyrrolide to give carbazolyl(-diisopropyl)pyrrolylsilane (9). Lithiumpyrrolide cleaves the Si-NC 12 H 8 -bond of 9 and forms the diisopropyl-bis(pyrrolyl)silane 10.

Carbazolylsilane: Synthese und Kristallstrukturen / Carbazolylsilanes: Synthesis and Crystal Structures