Synthesis, Crystal Structure and Magnetic Behaviour of {[Co(dimb) 2 (H 2 O) 2 ]·(NO 3 ) 2 ·(H 2 O) 2 } n

The title complex {[Co(dimb) 2 (H 2 O) 2 ]·(NO 3 ) 2 ·(H 2 O) 2 } n ( 1 ) (dimb = 1,3‐di(imidazol‐1‐ylmethyl)‐5‐methylbenzene) has been hydrothermally synthesized by the reaction of dimb with Co(NO 3 ) 2 ·6H 2 O in aqueous solution. The cobalt(II) atoms are linked by bridging dimb ligands to form 2D corrugated and wavy networks containing Co 4 (dimb) 4 macrocyclic motifs. Two neighboring independent layers interlinked each other in a parallel fashion to construct three‐dimensional structure by O–H···O, N–H···O and C–H···O hydrogen bonds. Magnetic measurement shows the weak antiferromagnetic interaction with a one‐dimensional chain model in the range of 5–300 K, with J of –0.68 cm −1 .