Unusual cationic tris(dimethylsulfide)-substituted closo-boranes: preparation and characterization of [1,7,9-(Me2S)3-B12H9] BF4 and [1,2,10-(Me2S)3-B10H7] BF4 |
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Authors: | Hamilton Ewan J M Leung Hoitung T Kultyshev Roman G Chen Xuenian Meyers Edward A Shore Sheldon G |
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Institution: | Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, United States. hamilton.40@osu.edu |
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Abstract: | Rational syntheses of trisubstituted sulfur-bearing closo-boranes are presented. In the development of these syntheses unusual cationic closo-boranes 1,7,9-(Me(2)S)(3)-B(12)H(9)](+) (3) and 1,2,10-(Me(2)S)(3)-B(10)H(7)](+) (4) have been identified. These were initially recognized to be intermediates in the formation of the neutral trisubstituted species 1,7-(Me(2)S)(2)-9-(MeS)-B(12)H(9) (1) and 1,10-(Me(2)S)(2)-2-(MeS)-B(10)H(7) (2), respectively. Stable tetrafluoroborate salts were prepared and isolated, and their structures are presented. They are believed to represent the first structural determinations of cationic borane clusters of any type. |
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