Sind Metalloxid-Cluster molekulare Modelle von Metalloxiden?

Abstract

When metal oxides are synthesized from molecular precursors, metal oxide clusters are obtained under certain reaction conditions. They can either be stabilized by negative surface charges (M–O⁻ groups) or (mostly organic) ligands. Comparison of the structures shows that oxo clusters are no molecular models for metal oxides. The coordination polyhedra of the metals are interconnected in various ways, but different to the corresponding metal oxides. This results very frequently in very complex structures. Many clusters are modularly structured, which means they can be notionally disassembled in smaller building blocks.