THE REACTION OF [(CO(CO)2(ETA-5-C5H4))2CH2] WITH IODINE AND MERCURIC HALIDES

The reaction of [{Co(CO)2(η5-C5H4)}2CH2] with iodine gives two insoluble products which are formulated as [{Co2I(μ-CO)2{μ-(η5-C5H4)}2CH2}n][I]n and {ICo(I)(η5-C5H4CH2C5H4-η5)Co(I)}n with a few (C5H4)Co(CO)I2 end-groups, and two soluble but not isolable products which are formulated as [{Co(CO)I2(η5-C5H4)}2CH2] and [Co(CO)2(η5-C5H4CH2C5H4-η5)Co(CO)(I)2] on the basis of their infrared spectra. The reactions of [{Co(CO)2(η5-C5H4)}2CH2] with mercuric halides give insoluble 1 1 adducts containing CoHg bonds in a reaction which is reversed by addition of donor solvents such as acetonitrile or by compressing the adducts in alkali metal halide discs. © 1990.