Synthesis and structural characterization of terphenyl based mono(indenide) compounds of the rare-earth elements

The synthesis and X-ray crystal structure determination of the mono(indenide) rare-earth compounds [(DanipO)(Ind)Ln]2 (Ln = Sm, Yb) are reported (DanipO = 2-(o-anisyl)-6-(o-2-phenoxide)phenyl, Ind = indenide). Their molecular structures show an unsolvated dimeric half-sandwich compound and a formally dianionic partially demethylated mixed arylether/aryloxide terphenyl ligand.