Rhenium d6 compounds are being studied as potential catalysts for syn/gas conversions and as potential therapeutic agents incorporating �- -emitting nuclides 186Re and 188Re. Another possible use stems from the large mass of the rhenium. If stable, water-soluble, compounds of rhenium can be developed, they may be useful as contrast agents in medical imaging. As a first step in this area, we thought we would create compounds that contain rhenium and a clinically useful heavy atom, iodine. Easily generated Re(CO)5(OTf) was used to generate the little studied Re(CO)5I, generating the product in high yield. The iodide was used to to generate a series of novel Re(CO)3L2I compounds. Their syntheses and characterizations will be presented. Also presented will be several crystal structures including the pentacarbonyl iodid and triflate compounds and a novel D3h dimeric anion. The triflate compound had a surprising structure that provides information about this common reagent.

Novel d<sup>6</sup> Re(CO)<sub>3</sub> iodide compounds

241st National Meeting (2011)

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Novel d6 Re(CO)3 iodide compounds

Novel d⁶ Re(CO)₃ iodide compounds