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2,4,6-Tri-tert-butylphenyltrifluorosilane (1) reacts with lithium amides to give the aminofluorosilanes (2 - 7); RSiF 2 NHR′ (R = 2,4,6-Me 3 CC 6 H 2 ; R′ = H (2), CMe 3  (3), SiMe 2 CMe 3  (4)), (R-SiF 2 ) 2 NH (5), RSiF(NHR′) 2 . R′ = CMe 3  (6), C 6 H 5  (7). The reaction of 5 with BuLi in THF leads to the formation of the monomeric lithium derivative 8, R-SiF 2 Li ⊕ (THF) 3 -N ⊖  -SiF 2 R. The polymeric lithium derivative 9 [R-SiF 2 -N ⊖ -SiRF 2 Li ⊕ (THF) 2 ] n  is obtained by recrystallisation of 8 in THF. In 8 and 9 lithium is only coordinated to fluorine and THF. Hydrolysis of 8 or 9 lead to the 1,3-disiloxane 10, (RSiF 2 ) 2 O . 10 shows linearity at the oxygen and short Si-O bond lengths.

zeitschrift für naturforschung b

2.4.6-Tri-tert-butylphenylaminofluorsilane und Lithium-bis(2,4,6-tri tert- butylphenyldifluorsilyl)amid - im Kristall ein Polymer / 2.4.6-Tri-tert-butylphenylaminofluorosilanes and Lithium-bis(2,4,6-tri-tert-butylphenyldifluorosilyl) amide - in the Crystal a Polymer