Metallorganische verbindungen der lanthanoide: LXXVIII. Bis(pentamethylcyclopentadienyl) [4-(1,2,3,4,5-pentamethylcyclopentadien-1-yl)butoxy] (tetrahydrofuran)lanthanoide

LnCl3 (LnLa, Nd, Tm, Lu) reacts with NaCp* (Cp*C5(CH3)5) in THF to yield the complexes Cp*2Ln[O(CH2) 4Cp*(THF) (1 = La, 2 = Nd, 3 = Tm, 4 = Lu). Crystals of 2 are monoclinic, space group C2/c with a 2999.8(6), b 1396.1(3), c 1740.0(3) pm, ß 90.54(1)°, V 7287(3) × 10−3 m3 and Z = 8. Least-squares refinement on the basis of 4680 reflections (Fo>4σ(Fo)) led to a final R value of 0.0268. 4 crystallizes monoclinic, space group C2/ c with a 2965.4(5), b 1384.6(3), c 1740.6(4) pm, ß 90.81(1)°, V 7146(3) × 10−30 m3 and Z = 8. Least- squares refinement on the basis of 4097 reflections (Fo>4σ(Fo)) led to a final R value of 0.028.