Divalent Lanthanide Chemistry: Three Synthetic Routes to Samarium(II) and Ytterbium(II) Bis(phosphido) Species Including the Structural Characterization of Yb[PPh2]2(thf)4 and Sm[PPh2]2(N-MeIm)4
摘要:
As part of a general investigation of low-valent lanthanide phosphido chemistry, the reactions of LnI(2)(thf)(2), LnI(3)(thf)(3), and Ln[N(SiMe(3))(2)](2)(thf)(2) (Ln = Yb, Sm) with KPPh(2) and Ph(2)PH in tetrahydrofuran have been examined. Two different types of lanthanide(II) phosphido complexes of the general formula Ln[PPh(2)](2)(L)(4) with either thf or N-methylimidazole as donor ligands L are reported. The molecular structures show the hexacoordinate lanthanide atoms in slightly distorted octahedral environments with two phosphido ligands in trans positions and slightly pyramidal environments around the phosphorus atoms.
Divalent Lanthanide Chemistry: Three Synthetic Routes to Samarium(II) and Ytterbium(II) Bis(phosphido) Species Including the Structural Characterization of Yb[PPh2]2(thf)4 and Sm[PPh2]2(N-MeIm)4
摘要:
As part of a general investigation of low-valent lanthanide phosphido chemistry, the reactions of LnI(2)(thf)(2), LnI(3)(thf)(3), and Ln[N(SiMe(3))(2)](2)(thf)(2) (Ln = Yb, Sm) with KPPh(2) and Ph(2)PH in tetrahydrofuran have been examined. Two different types of lanthanide(II) phosphido complexes of the general formula Ln[PPh(2)](2)(L)(4) with either thf or N-methylimidazole as donor ligands L are reported. The molecular structures show the hexacoordinate lanthanide atoms in slightly distorted octahedral environments with two phosphido ligands in trans positions and slightly pyramidal environments around the phosphorus atoms.