Abstract
The dinuclear complex ({Fe(L-N4Me2)}2(BzImCOO))(ClO4)2*0.5(CH3)2CO has been investigated by Mossbauer spectroscopy carried out in the temperature range from T = 5Ku p to T= 190 K with externally applied magnetic fields of up to B = 5 T. By means of a consistent simulation of all experimental data sets within the Spin Hamiltonian formalism, the zero-field splitting and the rhombicity parameter of the ferrous high-spin site could be determined to be D = 7.2 ± 0.5 cm −1 and E/D = 0.1 ± 0.02. The sign of the quadrupole splitting is positive which indicates that the ferrous high-spin site of the dinuclear complex ({Fe(L-N4Me2)}2(BzImCOO))- (ClO4)2*0.5(CH3)2CO has an electronic ground state with the dxy orbital twofold occupied.
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