ReIBr – A new Re cluster halide, and its complexes

Rhenium iodide Re3I9 reacts with bromine to produce a new iodide bromide Re3I3Br6, from which aqua complex [Re3I3Br6(H2O)3]*3Et2O (1) was obtained. Replacement of water molecules in (1) with XPh3 (X = Sb, As, P) and 1,1-bis(diphenylphosphino)methane (dppm) leads to [Re3I3Br6(SbPh3)3]*3C3H6O (2), [Re3I3Br6(AsPh3)3]*2C3H6O (3), [Re3I3Br6(PPh3)3]*C3H6O (4) and [Re3I3Br6(dppm)3]*2CH2Cl2 (5) complexes which were structurally characterized and confirmed by the elemental analysis or the powder diffraction (XRPD). Additional characterization includes IR and 31P NMR spectroscopies.