ORGANOMETAL COMPOUNDS OF LANTHANOIDS .78. PENTADIEN-1-YL)BUTOXY](TETRAHYDROFURAN)LANTHANOIDS

LnCl(3) (Ln = La, Nd, Tm, Lu) reacts with NaCp(star) (Cp(star) = C-5(C H3)(5)) in THF to yield the complexes Cp(2)(star)Ln[O(CH2)(4)Cp(star)] (THF) (1 = La, 2 = Nd, 3 = Tm, 4 = Lu). Crystals of 2 are monoclinic, space group C2/c with a 2999.8(6), 6 1396.1(3), c 1740.0(3) pm, beta 9 0.54(1)degrees, V 7287(3) X 10(-30) m(3) and Z = 8. Least-squares refi nement on the basis of 4680 reflections (F-0 > 4 sigma(F-0)) led to a final R value of 0.0268. 4 crystallizes monoclinic, space group C2/c w ith a 2965.4(5), 6 1384.6(3), c 1740.6(4) pm, beta 90.81(1)degrees, V 7146(3)X 10(-30) m(3) and Z = 8. Least-squares refinement on the basis of 4097 reflections (F-0 > 4 sigma(F-0)) led to a final R value of 0. 028.