New complexes of the fac-{(CO)3Re} fragment bearing a diaminediphosphine ligand

The mono- and binuclear hydride compounds fac-ReH(CO)₃L] (1a) and {ReH(CO)₄}₂(μ-L)] (1b) have been prepared by reaction of ReH(CO)₅] with Ph₂PN(CH₃)(CH₂)₂N(CH₃)PPh₂ (L) under UV light. Protonation reactions of the hydride compound 1a with equimolar amounts of HSO₃CF₃ or HCl yielded the triflato or the chlorido compounds fac-Re(OSO₂CF₃)(CO)₃L] (2) and fac-ReCl(CO)₃L] (3), respectively. The compounds have been characterised by elemental analysis, IR and NMR spectroscopic data, and mass spectrometry. Their structures have been confirmed by X-ray crystallography.