Keywords: Borazines / Ring distortionThe solid-state structure of (HN=BF) 3 has been redetermined. It is characterised by a stacking of the molecules, similar to hexagonal boron nitride. In contrast, (F 3 CH 2 N=BF) 3 shows no intermolecular interactions between the planar borazine rings. In (Cl 2 BN=BCl) 3 , the Cl 2 B groups are almost perpendicularly oriented to the planar borazine ring and its B-Cl bonds are shorter than the Cl-B bonds to the ring boron atoms. Reactions of (Cl 2 BN=BCl) 3 with Me 3 SiNMe 2 allows a successive Cl/Me 2 N exchange. Depending on the molar ratio, the compounds [Cl
Keywords: Lithium / Boron / Deprotonation reactions / TetraphenylborazinatesThe reaction of the borazine Ph 3 B 3 N 3 H 3 , 1, with a diethyl ether solution of LiMe/LiI/TMEDA yields [(Ph 4 B 3 N 3 H 3 )Li-(tmeda)LiI(tmeda)], 2. However, when halide free LiMe is used in the presence of TMTA, then (Ph 4 B 3 N 3 H 3 )Li(tmta), 3, is formed which shows that a Me/Ph exchange occurs with the formation of LiPh which adds to 1 to form the borazinate 3. A Bu/Ph exchange is also observed in the reaction of 1 with LitBu/tmta. The product isolated from THF is compound [(Ph 4 B 3 N 3 H 2 Li-Li(thf) 3 ], 6c, which results from deprotonation of and LiPh addition to 1. A straightforward 1:1 LiPh addition reaction is observed on treatment of the borazine
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