Magnetic properties of a linear polynuclear cobalt (II) complex Co_7Na_2 (1, 2-OSC_6H_4)_8 (DMF)_12

摘要

The magnetic properties of a novel polynuclear complex Co_7Na_2 (1,2-Osc_6 H_4)8 (DMF)12 [(DMF- N) N-dimethylformamide] were investigated by fitting the variable-temperature mangn etic susceptibility based on the Heisenberg-Dirac-van Vleck model. The results show that the complex exhibits antiferromagnetic coupling interactions Between cobalt atoms with two coupling constants -19.9 and -37. 7 cm~-1.