Our research group has been interested in molecular magnetism, in designing and synthesizing new metal organic compounds containing copper (II) halides to study the magnetic properties. Magnetic interactions are known to be affected by: (1) bond length; (2) distortion (geometry); (3) halide-halide contact distances and angles. One area of interest is in synthesizing complexes with the general formula (AH)₂ CuX₄, where A is an organic base and X is chlorine or bromine. By varying the organic base, differences are seen in the crystal packing and the hydrogen bonding between the molecules. Changes in crystal packing affect the non-bonding halide-halide contacts and therefore the sign and magnitude of the magnetic exchange interactions. Bis(2,3-dimethylpyridinium) tetrabromocuprate (II) is a known magnetic ladder with significant magnetic interactions. Interest lies in extending the family of bis(2,3-disubstitutedpyridinium) tetrahalocuprates to see if more magnetic ladders can be produced. 2-Aminopyridinium complexes show strong hydrogen bonding that contributes to a tightly packed crystal lattice. Thus, we decided to look at 3-amino-2-substitutedpyridines as our organic base to observe how changing the position of the amino group would affect the hydrogen bonding, crystal packing and ultimately the magnetic properties. Synthesis, structure and magnetic properties of bis(3-amino-2-chloropyridinium) tetrahalocuprate (II) [halogen= Cl or Br] will be presented.