Replacement of Trimethylamine in Trimethylamine‐trispentafluoroethyl‐borane. Structures of [(C2F5)3BNMe3], [NMe4][(C2F5)3BOH], and K[(C2F5)3BCH2(CO)C6H5] |
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| Authors: | Eduard Bernhardt David J Brauer Martin Köckerling Prof Dr Gottfried Pawelke Dr |
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| Institution: | 1. Wuppertal, Bergische Universit?t, Fachbereich Chemie, Anorganische Chemie;2. Rostock, Universit?t, Institut für Anorganische Chemie/Festk?rperchemie;3. Institut für Anorganische Chemie/Festk?rperchemie Universit?t, Rostock, Albert‐Einstein‐Stra?e 3a, D‐18059 Rostock, Germany;4. Wuppertal, Bergische Universit?t, Fachbereich Chemie, Anorganische ChemieAnorganische Chemie, Fachbereich C, Bergische Universit?t Wuppertal, D‐42097 Wuppertal, Germany |
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| Abstract: | Trimethylamine‐tris(pentafluoroethyl)borane (C2F5)3BNMe3] ( 1 ) reacts at 190 °C with water under displacement of the trimethylamine ligand to yield the hydroxy‐tris(pentafluoroethyl)borate (C2F5)3BOH]? ( 2 ). In tributylamine 1 reacts with alkynes HC≡CR to form novel ethynyl‐tris(pentafluoroethyl)borate anions (C2F5)3BC≡CR]? – R = C6H5 ( 3 ), C6H4CH3 ( 4 ), Si(CH(CH3)2)3 ( 5 ) – in moderate yields. Compound 3 adds water across the triple bond to form the novel anion (C2F5)3BCH2(CO)C6H5]? ( 6 ). The structures of (C2F5)3BNMe3], NMe4](C2F5)3BOH] and K(C2F5)3BCH2(CO)C6H5] have been determined by x‐ray crystallography. |
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| Keywords: | Boron Pentafluoroethyl group Alkynes |
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