Metallorganische verbindungen der lanthanoide: LXXVI. cyclooctatetraenyl(tetramethylcyclopentadienyl)-komplexe der lanthanoide☆

Abstract The complexes [(C 8 H 8 )Ln(μ-Cl)(THF) n ] 2 (Ln = Y, La, Pr, Sm, Gd, Dy, Er, Lu) react with Na(C 5 Me 4 H) in THF to yield complexes (C 8 H 8 )Ln(C 5 Me 4 H)(THF) x (Ln = Y, La, Pr, Sm, Gd, Dy, Er, Lu). Crystals of (C 8 H 8 )La(C 5 Me 4 H)(THF) 2 ( 2 ) are monoclinic, space group P 2 1 / n with a = 850.80(15), b = 1183.5(2), c = 2290.1(5) pm, β = 96.707(16)°, V = 2273.8(8) × 10 −30 m 3 and Z = 4. Least-squares refinement on the basis of 3070 reflections (F o > 6σ(F o )) led to a final R of 0.0305. Compound (C 8 H 8 )Lu(C 5 Me 4 H) ( 8 ) crystallizes monoclinic, space group P 2 1 / m with a = 927.6 (2), b = 1431.3(4), c = 1114.4(2) pm, β = 90.41(1)°, V = 1479.5(5) × 10 −30 m 3 and Z = 4. Least-squares refinement on the basis of 2329 reflections (F o > 4σ(F o )) led to a final R of 0.0276.