Intramolecular Magnetic Interaction of Transition Metal ions in Complexes Containing Pyrimidine or Pyrazine as a Bridging Ligand

Abstract
The magnetic interactions between transition metal ions bridged with 4,6-pyrimidinedicarboxylate, 4,6-dipyridylpyrimidine, 23-pyrazine-dicarboxylate, or 2,3-dipyridylpyrazine were studied. Several dinuclear complexes containing Cu2+, Ni2+, Co2+, or Mn2+ were synthesized and characterized. They were antiferromagnetically coupled in all cases.