Easily Immobilized Di- and Tetraphosphine Linkers: Rigid Scaffolds that Prevent Interactions of Metal Complexes with Oxide Supports

摘要

Bifunctional phosphine linkers have played a crucial role in developing a molecular chemistry based upon oxide supports. These versatile connecting units have been applied in many areas of chemistry, for example as scavengers for metal complexes, in combinatorial methodologies, and for immobilizing catalysts. Any contact of the latter with reactive oxide surfaces, however, shortens their lifetime. In this contribution, we disclose a new linker system with a rigid tetraphenylelement scaffold, which is easy to synthesize and immobilize and renders any contact of the metal with the oxide surface sterically impossible.