Synthesis and single-crystal x-ray diffraction examination of a structurally homologous series of tetracoordinate heteroleptic anionic lanthanide complexes: Ln{N[Si(CH3)(2)CH2CH2Si(CH3)(2)]}(3)(mu-Cl)Li(L)(3) [Ln = Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb; (L)3=(THF)(3,) (Et2O)(3), (THF)(2)(Et2O)]

Just O; Rees WS

Inorganic Chemistry, Vol.40, No.8, 1751-1755, 2001

DOI10.1021/ic9912023 Export Citation

Synthesis and single-crystal x-ray diffraction examination of a structurally homologous series of tetracoordinate heteroleptic anionic lanthanide complexes: Ln{N[Si(CH3)(2)CH2CH2Si(CH3)(2)]}(3)(mu-Cl)Li(L)(3) [Ln = Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb; (L)3=(THF)(3,) (Et2O)(3), (THF)(2)(Et2O)]

Just O, Rees WS

Anhydrous lanthanide(III) chlorides (Ln = Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb) react with 3 equiv of lithium 2,2,5,5-tetramethyl-2,5-disila-1-azacyclopentanide, Li{N[Si(CH3)(2)CH2CH2Si(CH3)(2)]}, in THF or Et2O to afford the monomeric four-coordinate heteroleptic ate complexes Ln{N[Si(CH3)(2)CH2CH2Si(CH3)2]}(3)(mu -C1)Li(THF/Et2O)(3) (Ln = Sm (1), Eu (2), Gd (3), Tb (4). Dy (5), Ho (6), Er (7), Tm (8), Yb (9)), whose solid-state structures were determined by the single-crystal X-ray diffraction technique. All complexes additionally were characterized by melting point determination, elemental analyses, and mass spectrometry.