Slow Magnetic Relaxation In A One-Dimensional Coordination Polymer Constructed From Hepta-Coordinate Cobalt(Ii) Nodes

A one-dimensional coordination polymer was synthesized employing hepta-coordinate Co-II as nodes and dicyanamide as linkers. Detailed direct current (DC) and alternating current (AC) magnetic susceptibility measurements reveal the presence of field-induced slow magnetic relaxation behavior of the magnetically isolated seven-coordinate Co-II center with an easy-plane magnetic anisotropy. Detailed ab initio calculations were performed to understand the magnetic relaxation processes. To our knowledge, the reported complex represents the first example of slow magnetic relaxation in a one-dimensional coordination polymer constructed from hepta-coordinate Co-II nodes and dicyanamide linkers.