Synthesis and Properties of the Weakly Coordinating Anion [Me3NB12Cl11]− |
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| Authors: | Christoph Bolli Janis Derendorf Prof Dr Carsten Jenne Dr Harald Scherer Christian P Sindlinger Bianca Wegener |
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| Affiliation: | 1. Fachbereich C – Anorganische Chemie, Bergische Universit?t Wuppertal, Gaussstrasse 20, 42119 Wuppertal (Germany), Fax: (+49)?202‐439‐3503;2. Institut für Anorganische und Analytische Chemie, Albert‐Ludwigs Universit?t Freiburg (Germany);3. Institut für Anorganische Chemie, Eberhard‐Karls‐Universit?t Tübingen (Germany) |
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| Abstract: | The weakly coordinating anion Me3NB12Cl11]? has been prepared by a simple two‐step procedure. The anion Me3NB12Cl11]? is easily obtained in batches of up to 20 g by chlorination of the known H3NB12H11]? anion with SbCl5 at about 190 °C and subsequent N‐methylation with methyl iodide. Starting from NaMe3NB12Cl11], several synthetically useful salts with reactive cations (NO]+, Ph3C]+, and (Et3Si)2H]+) were prepared. Full spectroscopic (NMR, IR, Raman, TGA, MS) characterization and single‐crystal X‐ray diffraction studies confirmed the identity and purity of the products. The thermal, chemical, and electrochemical stability as well as the basicity of the Me3NB12Cl11]? anion is similar to that of the structurally related weakly coordinating 1‐carba‐closo‐dodecaborate and closo‐dodecaborate anions. The facile preparation of the Me3NB12Cl11]? anion and its ideal chemical and physical properties make it a cheap alternative to other classes of weakly coordinating anions. |
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| Keywords: | borates halogenation reactive cations weakly coordinating anions |
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