Phosphorus-functionalized cycloheptatrienyl-cyclopentadienyl sandwich complexes

通过钛、锆、铪、钒和铬的环庚三烯基-环戊二烯基夹层配合物的功能化合成了单磷烷和二磷烷配体，并用于制备杂双金属过渡金属配合物。首先，研究了钯和铂配合物及其形成分子内金属-金属相互作用的能力。在钯催化反应的基础上，研究了膦配体作为辅助配体在Suzuki-Miyaura偶联和Buchwald-Hartwig偶联等均相催化中的潜力。建立一个替代二茂铁基膦配体的配体家族是一个重要的目标。

Monophosphane and diphosphane ligands are synthesized by functionalization of cycloheptatrienyl-cyclopentadienyl sandwich complexes of the metals titanium, zirconium, hafnium, vanadium and chromium and used for the preparation of heterobimetallic transition metal complexes. First, palladium and platinum complexes and their ability to form intramolecular metal-metal interactions are studied. Based on palladium-catalyzed reactions, the potential of the phosphane ligands to serve as ancillary ligands in homogeneous catalysis such as Suzuki-Miyaura and Buchwald-Hartwig coupling will be investigated. It is an important goal to establish an alternative ligand family to the ubiquitous ferrocene-based phosphane ligands.