Structural cutting and recombining in layered sodium dysprosium phosphonate: key roles of flexible pyrazinyl hydrazone molecular tools

A cutting [Na 5 Dy 6 ] phosphonate cluster and a recombinant [Na 4 Dy 8 ] ∞ phosphonate layer are isolated using the pyrazinyl hydrazone ligand. The latter presents the first heterometal phosphonate exhibiting triple N-bridges of pyrazinyl groups.