Synthesis and crystallographic characterization of di­phenyl­amide rare-earth metal complexes Ln(NPh(2))(3)(THF)(2) and [(Ph(2)N)(2) Ln(μ-NPh(2))](2)

Studies of the coordination chemistry between the di­phenyl­amide ligand, NPh(2), and the smaller rare-earth Ln (III) ions, Ln = Y, Dy, and Er, led to the structural characterization by single-crystal X-ray diffraction crystallography of both solvated and unsolvated complexes, namely, tris­(di­phenyl­amido-κN)bis­(tetrahydro­furan-κO)yttrium(III), Y(NPh(2))(3)(THF)(2) or [Y(C(12)H(10)N)(3)(C(4)H(8)O)(2)], 1-Y, and the erbium(III) (Er), 1-Er, analogue, and bis­[μ-1κN:2(η(6))-di­phenyl­amido]­bis­[bis­(di­phenyl­amido-κN)yttrium(III)], [(Ph(2)N)(2)Y(μ-NPh(2))](2) or [Y(2)(C(12)H(10)N)(6)], 2-Y, and the dysprosium(III) (Dy), 2-Dy, analogue. The THF ligands of 1-Er are modeled with disorder across two positions with occupancies of 0.627 (12):0.323 (12) and 0.633 (7):0.367 (7). Also structurally characterized was the tetra­metallic Er(III) bridging oxide hydrolysis product, bis­(μ-di­phenyl­amido-κ(2) N:N)bis­[μ-1κN:2(η(6))-di­phenyl­amido]­tetra­kis­(di­phenyl­amido-κN)di-μ(3)-oxido-tetra­erbium(III) benzene disolvate, {[(Ph(2)N)Er(μ-NPh(2))](4)(μ-O)(2)}·(C(6)H(6))(2) or [Er(4)(C(12)H(10)N)(8)O(2)]·2C(6)H(6), 3-Er. The 3-Er structure was refined as a three-component twin with occupancies 0.7375:0.2010:0.0615.