Copper(II) Complex of a Urea‐functionalized Pyridyl Ligand: Synthesis, Crystal Structure, and Acetate Binding Properties

A copper(II) acetate complex with a urea‐functionalized pyridyl ligand, [CuL(OAc) 2 ] 2 · 2AcOH ( 1 ) [L = N ‐(3‐ c hlorophenyl)‐ N '‐(3‐pyridyl) urea], was synthesized by the reaction of L with Cu(OAc) 2 in methanol. A zigzag‐shaped hydrogen bond chain of L is obtained via urea N–H ··· N pyridyl interactions, and a two‐dimensional hydrogen bond network structure is further formed through the C–H ··· O interaction. In the complex 1 , a paddle‐wheel structure is generated by Cu ··· O acetate interactions and Cu ··· N pyridyl interactions. Furthermore, hydrogen bonding chain structure is extended through weak C–H ··· O hydrogen bond interactions. Through ultraviolet‐visible (UV/Vis) spectroscopy, the acetate binding properties of L in solution were also evaluated. Variable temperature magnetic susceptibility measurement indicates that the metal complex 1 displays antiferromagnetic coupling property.