Chemistry Letters, Vol.32, No.9, 868-869, 2003
A strongly antiferromagnetically coupled dinickel(II) center bridged by one azido and one alkoxo
The dinuclear nickel(II) complexes [Ni-2(L-Et)(mu-1,3-N-3)-(N-3)(H2O)].[Ni-2(L-Et)(mu-1,3-N-3)(N-3)(CH3OH)] (NO3)(2).H2O, (1) and [Ni-2(L-Et)(mu-1,3-N-3)(N-3)(H2O)]NO3.H2O, (1') (HL-Et= N, N, N', N'-tetrakis [(1-ethyl-2-benzimidazolyl)methyl]-2-hydroxy-1,3-diaminopropane) bridged by one alkoxo of L-Et- and one azido were prepared and the crystal structure of 1 was determined by X-ray crystallography. Magnetic susceptibility measurements for V from liquid helium temperature to room temperature showed an antiferromagnetically strong interaction (2J = - 187 cm(-1), H = - 2JS(1) . S-2).