HALIDE ABSTRACTION AS A ROUTE TO CATIONIC MOLYBDENUM(IV) COMPOUNDS - CRYSTAL AND MOLECULAR STRUCTURE OF [CPMOCL(MECN)(4)][SBCL6](2)CENTER-DOT-MECN

摘要

Treatment of CpMoCl(3)(MeCN)(2) with SbCl5 in acetonitrile solution provides the solvated cationic series [CpMoCl(2)(MeCN)(3)](+), [CpMoCl(MeCN)(4)](2+) and [CpMo(MeCN)(6)](3+) as hexachloroantimon(v)ate salts following sequential halide abstraction. Characterization follows from microanalytical and spectroscopic (IR, and H-1 NMR) data and, in the case of [CpMoCl(MeCN)(4)][SbCl6](2) . MeCN, by X-ray crystallographic studies. The structure is disordered but individual cations contain a six coordinated pseudo-octahedral metal geometry in which the cyclopentadienyl ligand (regarded as unidentate) and the chlorine atom occupy axial positions with an equatorial array of four acetonitrile ligands. [References: 20]