Synthesis, structure and optical characteristics of pyridyl substituted diketonates of lanthanoids

Abstract

Lanthanoid complexes of a dipyridylsubstituted β-diketonate ligand have been prepared and their structure and optical characteristics have been explored. The structure of these complexes are ten-coordinate centrosymmetric dimers with quadruply bridging diketonate ligands, terminal diketonate ligands and ‘dangling' and bound pyridyl nitrogen atoms. The europium complex diplays strongly luminescent properties while the terbium analogue is completely quenched.