A low temperature magnetic susceptibility study of phenanthrolinium pentachloro manganate(III): [PhenH2] [MnCl5]

The temperature and field dependence of the magnetic susceptibility of [PhenH2] [MnCl5] have been determined over the range 300 K to 1.43 K. The complex behaves as a simple Curie paramagnet over this temperature interval with no evidence of either significant intermolecular exchange, single ion zero field splitting or spin-orbit effects in the magnetic behavior. These results are considered in terms of the known electronic and molecular structure of the complex.