Dimethylsulfide-dicarbaborane chemistry. Isolation and characterisation of isomers [9-(SMe2)-nido-7,8-C2B9H10-X-Me] (where X=1, 2, 3 and 4) and some related compounds. An unusual skeletal rearrangement

0094287 - ÚACH 2008 RIV GB eng J - Journal Article
Grüner, Bohumír - Holub, Josef - Plešek, Jaromír - Štíbr, Bohumil - Thorton-Pett, M. - Kennedy, D. J.
Dimethylsulfide-dicarbaborane chemistry. Isolation and characterisation of isomers [9-(SMe2)-nido-7,8-C2B9H10-X-Me] (where X=1, 2, 3 and 4) and some related compounds. An unusual skeletal rearrangement.
[Dimethylsulfido-dikarbaboranová chemie. Izolace a charakterizace isomerů [9-(SMe2)-nido-7,8-C2B9H10-X-Me] (kde X = 1,2,3 a 4) a příbuzných sloučenin. Neobvyklý přesmyk skeletu.]
Dalton Transactions. Roč. 42, - (2007), s. 4859-4865. ISSN 1477-9226. E-ISSN 1477-9234
R&D Projects: GA MŠMT LC523; GA AV ČR IAA400310613; GA ČR GA203/05/2646
Grant - others:EPSRC(GB) J/56929
Institutional research plan: CEZ:AV0Z40320502
Keywords : dicarborane chemistry
Subject RIV: CA - Inorganic Chemistry
Impact factor: 3.212, year: 2007

Oxidative coupling by FeCl3 of the [nido-7,8-C2B9H11-9-Me](-) anion 1a with SMe2 yields a mixture of four isomers of 9-(SMe2)-nido-7,8-C2B9H10-X-Me, where X = 1, 2, 3 and 4 (compounds 2a, 2b, 2c and 2d respectively). On high dilution of the reaction mixture, the 9-(SMe2)(-) nido-7,8-C2B9H10-10-Me 2e isomer is also isolated in a low yield. The isomers are separated by HPLC, and are identified and characterised by NMR spectroscopy and by single-crystal X-ray diffraction analyses of 2c and 2d.

Oxidativní kapling mezi aniontem [nido-7,8-C2B9H11-X-Me]- a SMe2 pomocí FeCl3 vyvolal neočekávaný vznik čtyř isomerů [9-(SMe2)-nido-7,8-C2B9H10-X-Me] (kde X = 1,2,3 a 4). Ty byly isolovány HPLC technikou a charakterizovány NMR spektroskopií a rentgenovou difrakcí.
Permanent Link: http://hdl.handle.net/11104/0154127