Rhenium bromide structure

Rhenium, tris(dithiodibenzoyl)-structure, 1, 63 Rhenium bromide Re3Br9... 

Rhenium, iris(cis-l, 2-diphenylethylene-l, 2-dithiolato)-structure, 24 Rhenium bromide RcjBr,... 

X-ray diffraction, which showed that the structure of the [Tc2Cl8]2 ions is analogous to that of the isoelectronic cluster rhenium and molybdenum chlorides and bromides with a quadruple M-M bond [1,89,90] (Fig. la, Table 1). 

The rhenium(III) halides, with Cl, Br, and I are all well established. All three can be prepared by a variety of methods and all have been shown to have structures built of Re units of D3 symmetry with Re=Re double bonds. The structure of the crystalline bromide was only recently reported.6 Although these halides are often designated as ReX3, especially in older literature, they should be written as ReA, since only on this basis does their chemistry make sense. 

A novel structure 9 has been postulated for this complex on the basis of infrared data. Similar compounds can be obtained from rhenium(III) bromide and... 

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