Abstract
The reaction of sulfur dioxide with two new dinuclear rhodium compounds has been examined. The dinuclear compounds are unique in that two cyclopentadienylrhodium moieties are coupled by a methylene linkage between the rings. This linkage appears to result in geometric and kinetic factors which favor reactions in which RhRh bond formation may occur. Reaction of CH 2[CpRh(CO)] 2-μ-CO with SO 2 result in the formation of a μ-SO 2 derivative, CH 2[CpRh(CO)] 2-μ-SO 2, and a second compound which may be an SO 2 adduct of CH 2[CpRh(CO)] 2-μ-CO. Reaction of SO 2 with CH 2[CpRh(ene) 2] 2 gives a μ-S 2O 4 derivative which is the first example of a bridging dithionite compound in the rhodium series.
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