Some new results on the Fischer–Hafner synthesis of vanadium arenes
摘要:
The biphasic liquid system formed in the Fisher-Hafner reduction of VCl3 in toluene contains the [V(eta(6)-MeC6H5)(2)](+) cation which has been isolated in the solid state as the tetraphenylborato- (from aqueous solution) or as the [Al2Cl7](-), [Al4O2Cl10](2-) and [catena-Al4O2Cl9](-) salt (directly from the biphasic liquid system). The crystal structures of [V(eta(6)-MeC6H5)(2)](2)[Al4O2Cl10] (2), and [V(eta(6)- MeC6H5)(2)][catena-Al4O2Cl9] (3), have been solved representing the first structural report of the [V(eta(6)-MeC6H5)(2)](+) cation (compounds 2 and 3) and of the polymeric nonachlorodioxoaluminate anion [Al4O2Cl9](-) (compound 3). (c) 2006 Elsevier B.V. All rights reserved.