Synthesis and structural characterization of two donor-functionalized terphenyl magnesium compounds

The synthesis and structural characterization of two novel donor-functionalized terphenyl magnesium compounds, namely (Danip)2Mg (1) [Danip = 2,6-di(o-anisyl)phenyl] and [DinapOMg(THF)]2 (Dinap = 2,6-di(o-2-methoxynaphthyl)phenyl; DinapO = 2-(o-2-methoxynaphthyl)-6-(o-2-naphthoxide)phenyl) is reported. Compound 1 represents a first structurally authenticated bis terphenyl magnesium compound, while the molecular structure of dimeric tetrahydrofuran solvated 2 shows a five-coordinate magnesium atom stabilized by a partially demethylated dianionic mixed arylether/aryloxide terphenyl ligand (= DinapO).