Strategies for the Synthesis of New Materials Based on Squarate-Substituted Phosphazenes and d or f Metals

Abstract

We report the synthesis of a new organo-inorganic ring system, squarate-substituted cyclophosphazene derivative 3. The isolated product was characterized by means of elemental analysis, IR and ¹³C-NMR spectroscopy. Elemental analysis, molar conductivity data, IR and electronic spectra support the general formulae of obtained complexes: [M₂(3)(OH₂)₄(ClO₄)₂](ClO₄)₄, (M=Fe³⁺, Cr³⁺), [M₂(3)(OH₂)₈Cl₄]Cl₂, (M=Eu³⁺, Ce³⁺).

Keywords::

• cyclophosphazene
• transition metal complexes