| Summary: | A tetranuclear dysprosium Schiff base complex was isolated by reacting dysprosium chloride with 2-hydroxy-3-methoxybenzaldehyde and 2-(aminomethyl)pyridine in-situ under basic conditions. The isolated Dy(III) complex was characterized by elemental analyses, single crystal X-ray diffraction and molecular spectroscopy. The complex crystallizes in the triclinic space group P-1 with unit cell parameters of <i>a</i> = 10.2003 (4), <i>b</i> = 13.8602 (5), <i>c</i> = 14.9542 (6), <i>α</i> = 94.523 (3), <i>β</i> = 109.362 (4), and <i>γ</i> = 99.861 (3). The magnetic properties of <b>1</b> have been investigated by DC and AC susceptibility measurements. The DC measurements reveal weak exchange coupling of antiferromagnetic nature. In the AC measurement, the complex shows a slow relaxation of magnetization in the absence of an external magnetic field.
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