A Synthetic Route to Borylene-Bridged Poly(ferrocenylene)sThe authors thank Prof. Dr. Rainer Winter and Dipl.-Chem. Jörg Maurer, Universität Regensburg, for helpful discussions. Financial support through PhD grants from the Hessisches Ministerium für Wissenschaft und Kunst (J.B.H.), the Fonds der Chemischen Industrie, and the Bundesministerium für Bildung und Forschung (M.S.) is gratefully acknowledged. M.C.H. wishes to thank Prof. Dr. Gernot Frenking for his helpful discussions. Computer time was provided by the CSC Frankfurt and the HHLR Darmstadt. This work was supported by the Deutsche Forschungsgemeinschaft, and the GPC and light-scattering instrumentation was in part provided by the National Science Foundation.