Effective Modular Assembling of Novel Ligands Starting from (Thio)Phosphorylated Anilines

A Rare Type of Rhenium(I) Diimine Complexes with Unsupported Coordinated Phosphine Oxide Ligands: Synthesis, Structural Characterization, Photophysical and Theoretical Study

“…That's why the family of coordination compounds containing phosphine oxides consists mainly of the complexes with hard Lewis acids like lanthanides and actinides ions, first row transition metals,, , , and heavy metals in high oxidation states: Re V , Re III[17,18] and Au III , which are complementary partners for the hard donor oxygen in the phosphine oxides. In the complexes of soft metal ions the coordinated phosphine oxide moiety is commonly presented as a component of a polydentate ligand, where the phosphine oxide oxygen often plays the role of labile function in catalytic processes …”

“…The Re I ion is a typical representative of the soft Lewis acids and similarly to the other soft metal centers coordinates the phosphine oxide mostly in combination with the other suitable soft functions, which support the Re–O bond . In general, the Re I organometallic compounds attract considerable attention particularly due to their unique photophysical and photochemical characteristics, which open a way to a wide range of practical applications.…”