Phosphorus-functionalized cycloheptatrienyl-cyclopentadienyl sandwich complexes

通过对钛、锆、氢、钒、铬等金属的环庚三烯-环戊二烯夹心络合物进行官能化处理，合成了单膦和双膦配体，并用于制备过渡金属异双金属络合物。首先，研究了钯和铂的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，我们将研究膦配体在均相催化中作为辅助配体的潜力，如Suzuki-Miyaura和Buchwald-Hartwig偶联。建立一个替代普遍存在的二茂铁基膦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.