Abstract
We have determined the crystal structures of new Co(II) polynuclear complex Co(sba)(H2O)2·H2O (sba = 4-sulfobenzoate) (1) by X-ray crystallography. The crystal structure of 1 shows Co(II) uniform chains in which octahedral Co(II) centers are connected through double μ-OH2 single syn-syn μ-carboxylato bridging ligands, and these uniform chains are well separated by the sba ligands. Magnetization and magnetic susceptibility data of a single crystal of 1 taken along the different crystallographic axes suggest a large uniaxial magnetic anisotropy, the so-called Ising anisotropy, possessing large c∗-axis magnetic moments. Magnetic susceptibility data of 1 is explained by an 1D Ising ferromagnet with intra-chain exchange interaction of Jz/kB = 39.6 K.
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