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.
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.
Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, United States. hamilton.40@osu.edu
Ewan J M
EJ
Hamilton
Hoitung T
HT
Leung
Roman G
RG
Kultyshev
Xuenian
X
Chen
Edward A
EA
Meyers
Sheldon G
SG
Shore
D001880:Boranes / Q000138:chemical synthesis / Q000737:chemistry*; D002412:Cations / Q000138:chemical synthesis / Q000737:chemistry*; D060326:Chemistry Techniques, Synthetic; D018360:Crystallography, X-Ray; D054879:Halogenation; D008958:Models, Molecular; D013440:Sulfides / Q000138:chemical synthesis / Q000737:chemistry*
D001880:Boranes; D002412:Cations; D013440:Sulfides; C004784:dimethyl sulfide