Synthesis and characterization of oligonuclear Naphthalene and Diphosphacyclobutadiene transition metal complexes

This dissertation deals with the synthesis and characterization of oligonuclear transition metal complexes, which contain two different types of bridging ligand: naphthalene (C10H8) and 1,3-diphosphacyclobutadiene P2C2R2, a phospha-organic analogue of cyclobutadiene. Chapter 1 gives a brief introduction into the basic characteristics of polyarene and naphthalene-brigded complexes. Furthermore, the chemistry of metal complexes with diphosphacyclobutadienes is briefly introduced. In chapter 2, the synthesis and the elucidation of the electronic structure of dissymmetrical naphthalene-bridged iron-iron and iron-ruthenium complexes are discussed. Investigations concerning the reactivity of bis(diphosphacyclobutadiene) sandwich anions towards silicon electrophiles are described in chapter 3. The first results of coordination studies of these novel phospha-organometallic building blocks are presented in chapters 3-6