Coordination modes of 1,2,3,4-tetrahydro-1,4-diphenyl-1,4-benzodiphosphinine (bedip) to Pt and Pd metal ions: Synthesis and structural characterization of mono- and bi-nuclear complexes

Within this study, coordination properties of the cyclic diphosphine 1,2,3,4-tetrahydro-1,4-diphenyl-1,4-benzodiphosphinine (bedip) are investigated, through the preparation of neutral and cationic Pt(II), Pt(IV) and Pd(II) complexes. The diphosphine acts as bridging ligand in the neutral Pt(II) and Pd(II) complexes, affording [MX(CH3)(μ-bedip)]2 (X = Cl, Br, I, CH3) species. Chelation is observed in all the remaining complexes. The molecular structures of [PtX(CH3)(μ-bedip)]2 (X = Br, I) and [PtI(CH3)3(bedip)] are also determined.

Graphical abstractVersatile coordination features of 1,2,3,4-tetrahydro-1,4-diphenyl-1,4-benzodiphosphinine (bedip) are disclosed by preparing neutral and cationic Pt(II), Pt(IV) and Pd(II) complexes. Spectroscopic and structural characterizations are reported along with preliminary reactivity investigations.Figure optionsDownload full-size imageDownload as PowerPoint slide