Abstract
LuCl 3 reacts with two equivalents of sodium cyclopentadienide in THF followed by crystallization from this solvent at 5°C to afford (C 5H 5) 2LuCl · OC 4H 8. The product has been characterized by its proton NMR and mass spectra, elemental analysis and by single crystal X-ray diffraction studies. The complex (C 5H 5) 2LuCl · OC 4H 8 crystallizes in the monoclinic space group P2 1/ n with the unit cell parameters, a 8.116(2), b 12.670(2), c 14.376(1) Å, β 105.61(1)°, V 1423.7 Å 3, Z = 4, D c 1.925 g cm −3. The structure was solved by heavy-atom Patterson techniques and the least-squares refinement has led to a final R value of 0.097 based on 2253 independent observed reflections. The THF molecule is coordinated to the lutetium atom at a LuO bond length of 2.27(1) Å. The LuC(η5) bond distances average 2.56 Å. The compound (η 5-C 5H 5) 2LuCl · OC 4H 8 is a neutral monomer.
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