摘要:
                                Reaction of 2 equiv. of LiCp(s) [Cp(s) = C(5)Me(4)(SiMe(2)Bu(t))] with MCl(2) (M = Sn or Fe) affords the metallocene compounds, [M(eta-Cp(s))(2)], in high yield; single-crystal X-ray analyses of these metallocenes reveal the planar cyclopentadienyl rings to be parallel for both Sn and Fe derivatives.