Phosphorus-Nitrogen Compounds Incorporating Transition Metals

Abstract

The use of deprotonation-substitution reactions on poly(alkyl/arylphosphazenes) for the preparation of new types of poly(phosphazenes) is summarized. Emphasis is placed on those with metal-containing side groups. The coordination of lithium and silver tetrafluoroborate to the backbone of [Me(Ph)PN]_n and [Me₂PN]_n is also discussed. In the second part of this paper, the synthesis and characterization of new types of the μ-phosphorus-bridged diiron compounds are reviewed. Many of these incorporate amino and silylamino substituents and are derived from the reactions of low-coordinate P-N compounds with the diiron ion, [(μ-CO)(μ-S-t-Bu)Fe₂(CO)₆]⁻.

Key Words:

• poly(phosphazene)
• polymer-bound
• transition metals
• phosphido-bridged diiron complexes
• low-coordinate phosphorus compounds