Naphthaleneytterbium, C10H8Yb(THF)3 reacts with Cp2Cr, Cp2Co, Cp2Ni, and Cp2V in THF to give Cp2Yb. In the case of the reaction of C10H8Yb(THF)3 with Cp2V, vanadium-containing intermediates could be isolated. One of them, CpVC10H8VCp, has been characterized by X-ray differaction. The crystals are monoclinic, space group P2(1)/n, with a 907.0(5), b 798.8(3), c 1080.8(5) pm, beta 105.21(4)-degrees; Z = 2. The structure was refined to R = 0.0288 for 1131 observed reflections (F(o) > 4-sigma(F(o))).