Synthesis, characterization and molecular structures of the trichloro-η1-benzoyldiazenido [ReCl3{η1-NNC(O)Ph}(PPh3)2] and oxorhenium [ReOCl2(OMe)(PPh3)2] complexes derived from reactions of [ReCl2{η2-NNC(O)Ph}(PPh3)2] with a peroxide or dioxygen

The reactions of [ReCl2{η2-NNC(O)Ph}(PPh3)2] (1) with t-BuOOH, in C6H6 or chlorinated solvents, at room temperature or with MeOH upon reflux in air lead to the trichloro-η1-benzoyldiazenido [ReCl3{η1-NNC(O)Ph}(PPh3)2] (2) or the methoxy-oxo [ReOCl2(OMe)(PPh3)2] (3) compound, respectively, which have been characterized by spectroscopic and FAB+-MS methods, elemental and single crystal X-ray diffraction analyses. They show distorted octahedral coordinaiton geometries with trans triphenylphosphine ligands, an essentially linear η1-diazenido moiety in 2 and the methoxy group in 3 in trans position to the oxo ligand.

Trichloro-η1-benzoyldiazenido and methoxyoxo rhenium complexes have been prepared from reactions of the dichloro-η2-benzoylhydrazido precursor with t-BuOOH or O2, respectively, and their X-ray molecular structures are also reported.Figure optionsDownload as PowerPoint slide