Abstract

Lithiated primary silylphosphanes and -arsanes react with rircOnocene-chloride-hydride to give planar Zr(III)2-E2-ringsystems (R = SiMc2Thex (I), Si(i-Pr)3, SiF(t-Bu)Is). However, the complexes can also be synthesized by conversion of zirconocene-dichloride with lithiated silylphosphanes. Reductive dehydrogenation of 1 through heating with Pd on activated charcoal or [(Ph3P)2Pt(C2H4)] in toluene leads to 2.

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