antiferromagnetic susceptibility
1.Variable-temperature (4. 2～300k) magnetic susceptibility measurements ars recorded for[(VO)_2(TPHA)(H_2O)_2(Me_2bpy)_2] (Ac)_2. The exchange integral, J,is found to be-42. 7cm~(-1). This indicates ah antiferromagnetic spin-exchange interaction between the VO(Ⅱ) ions.
