Rare-Earth Metal Complexes Supported by a [2.2]Paracyclophane-Derived Diamide Ligand

A diamide ligand featuring a [2.2]paracyclophane (CP) backbone was synthesized and introduced to the coordination and organometallic chemistry of rare-earth metals. Alkane elimination and salt metathesis reactions were employed to prepare rare-earth metal benzyl and iodide complexes supported by the CP-derived diamide ligand. In addition, heteronuclear naphthalene dianion complexes were synthesized by the reduction of the rare-earth metal iodides. All new compounds were characterized by X-ray crystallography, elemental analysis, 1H and 13C nuclear magnetic resonance spectroscopy, and absorption spectroscopy. Furthermore, the coordination chemistry supported by the CP-derived diamide ligand is compared to that of the ferrocene-derived diamide ligand.