The synthesis, structure and magnetic properties of two new tetranuclear copper(II) compounds [{Cu(S-dbpt)} 2 (μ-Cl) 2 ][{CuCl 2 } 2 (μ-Cl) 2 ] (S-dbpt; N,N,N′,N′-tetraisobutylpyridine-2,6-dithiocarboxamide) 1 and [{CuCl(S-dppt)}] 2 [{CuCl 2 } 2 (μ-Cl) 2 ] (S-dppt; N,N,N′,N′-tetraisopropylpyridine-2,6-dithiocarboxamide) 2 are reported. Both compounds contain a cationic complex with copper(II) coordinated to the ligand through both the thioamide S atoms and pyridilic N atom and one chlorine atom. The structure of the cationic dinuclear entity [{Cu(S-dbpt)} 2 (μ-Cl) 2 ] 2+ in 1 consists of two square pyramids sharing a basal to apical edge. For compound 2, there are two cationic mononuclear complexes [{CuCl(S-dppt)}] + . Both compounds contain the same dinuclear chlorine bridged anion [{CuCl 2 } 2 (μ-Cl) 2 ] 2− , containing a planar [Cu 2 (μ-Cl) 2 ] core. Magnetic susceptibility measurements show weak antiferromagnetic coupling between the Cu(II) ions in these anionic complexes (J=−077cm −1 for 1 and 0.88cm −1 for 2). The cationic complex of 1 shows a ferromagnetic interaction with J=+3.2cm −1 .