Single-Ion-Magnet Behavior in a Two-Dimensional Coordination Polymer Constructed from CoII Nodes and a Pyridylhydrazone Derivative

A novel two-dimensional (2D) coordination polymer, [Co­(ppad)2]n (1), resulted from the assembly of CoII ions based on a versatile ligand termed N3-(3-pyridoyl)-3-pyridinecarboxamidrazone. Alternating/direct-current magnetic studies of compound 1 indicate that the spatially separated high-spin CoII ions act as single-ion magnets (SIMs). The present work represents the first case of a 2D CoII-based SIM composed of a monocomponent organic spacer.