912336-72-2Relevant articles and documents
B-substituted (arene)ruthenacarborane-sulfonium, -thioether and -mercaptan complexes: Mild single and double dealkylation and structural implications in the antipodal distance
Planas, Jose Giner,Vinas, Clara,Teixidor, Francesc,Light, Mark E.,Hursthouse, Michael B.,Ogilvie, Helen R.
, p. 4193 - 4205 (2007/10/03)
Reactions of [RuCl2(η6-arene)]2 (arene = benzene, p-cymene) with nido-[7-R-10-L-7,8-C2B9H 9]- in THF at room temperature for 3 d give the (arene)ruthenacarborane complexes closo-[3-Ru(η6-arene)-1-R-8-L- 1,2-C2B9H9]+ {arene = benzene, R = H [L = Me2S (1a), THT (1b), EtPhS (1c)], R = Me [L = Me2S (2a)]; arene = p-cymene, R = H [L = Me2S (3a)]} and mercaptan closo-[3-Ru(η6-arene)-1-R-8-HS-1,2-C2B 9H9] [arene = benzene, R = H (4), Me (5); arene = p-cymene, R = H (6)] in yields of 20-40% and 22-29%, respectively. The asymmetric ligand nido-[9-Me2S-7,8-C2B9H 10]- leads to the thioether complex closo-[3- Ru(η6-benzene)-7-MeS-l,2-C2B9H 10] (8) in 34 % yield under the same reaction conditions. The crystal structure of 1a is described and compared with those of 4 and 8. The fully assigned 11B NMR spectroscopic data for a whole series of ruthenacarboranes having B-substituted sulfonium, thioether and mercaptan groups are presented. These data show a relation between antipodal cluster atom distances (antipodal distance) and antipodal effect (AE) in the crystal structures of these complexes and for other families of heteroboranes such as closo-[EB11H11] and closo-[EB9H9]. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.
